Billionaire businessman Donald Trump became the Republican Party's presumptive nominee following the May 3 Indiana primary. From GOP leaders jumping on the Trump train to joining the #NeverTrump movement, here's the Washington Examiner's running list of where Republican members in Congress stand when it comes to supporting the party's probable nominee:

Republican Senators

Senators who have endorsed Donald Trump (7):

Sen. David Perdue, R-Ga. — Perdue fully endorsed Donald Trump on June 1. "It is time for an outsider in the White House," Perdue wrote in a column for the Washington Post. "It is time to let Trump be Trump, and to help him win this election."

Sen. Deb Fischer, R-Neb. — Following a May 12 meeting on Capitol Hill between Trump and GOP lawmakers, Fischer confirmed she had already "endorsed the nominee," adding that Trump "has tapped into where people are in the country."

Sen. Jeff Sessions, R-Ala. — At a Trump rally in Alabama on Feb. 28, Sessions said: "I am pleased to endorse Donald Trump for president of the United States." Sessions was a speaker at the Republican National Convention in July 2016.

Sen. Mitch McConnell, R-Ky. — In a May 4 statement, McConnell said: "I have committed to supporting the nominee chosen by Republican voters, and Donald Trump, the presumptive nominee, is now on the verge of clinching that nomination." McConnell was a speaker at the Republican National Convention in July 2016.

Sen. Orrin Hatch, R-Utah — Following a May 12 meeting on Capitol Hill between Trump and GOP lawmakers, Hatch said he "totally endorsed" Trump. Hatch later added in a statement: "Now that Donald Trump is the presumptive nominee, I will do what I can to help him run a successful campaign."

Sen. Richard Burr, R-N.C. — Burr reaffirmed his Trump endorsement on May 19: "I've supported Donald Trump. I'll campaign with Donald Trump in North Carolina. I'm supportive of his presidency and I believe what America needs is new leadership."

Sen. Rob Portman, R-Ohio — "I said all along I intend to support the Republican nominee," Portman said on May 5. "The Republican voters have now spoken. The nominee appears to be Donald Trump. I'll be supporting Donald Trump as the nominee as I said I would."

Senators who will not endorse Donald Trump (6):

Sen. Ben Sasse, R-Neb. — On May 4, Sasse wrote an open letter reiterating his refusal to support Trump.

Donald Trump and Sen. Jeff Sessions. (AP Photo)

Sen. Dean Heller, R-Nev. — "I just can't agree with some of his positions," Heller told the Associated Press on May 4. Heller added he "vehemently" opposes some of Trump's comments, and said he "would not commit" to vote for Trump.

Sen. Jeff Flake, R-Ariz. — Following Trump's controversial comments regarding the heritage of a Trump University judge, Flake told MSNBC's Joe Scarborough he couldn't endorse Trump "at this point" on June 6. On June 7, Flake suggested to reporters on Capitol Hill that Trump's rhetoric could "spur" a challenge at the GOP convention in July.

Sen. Lindsey Graham, R-S.C. — Graham told CNN he is still "not supporting" Trump on May 23, despite recent allegations claiming Graham was pushing lawmakers to unite around the presumptive GOP nominee.

Sen. Mark Kirk, R-Ill. — Following Trump's controversial comments regarding the heritage of a Trump University judge, Kirk retracted his support for Trump via a statement on June 7: "While I oppose the Democratic nominee, Donald Trump's latest statements, in context with past attacks on Hispanics, women and the disabled like me, make it certain that I cannot and will not support my party's nominee for President regardless of the political impact on my candidacy or the Republican Party." Kirk had previously told CNN in March that he'd "certainly" support Trump if he were the nominee.

Sen. Mike Lee, R-Utah — On May 11, Lee told constituents Trump "scares [him] to death," and reiterated he hasn't supported nor endorsed Trump up to this point. On June 28, Lee reiterated he has "not endorsed Mr. Trump," and suggested Republicans would "rally more aggressively" behind the presumptive nominee if he embraced the Constitution.

Senators who announced their support of the GOP nominee after May 4, the day Donald Trump became the party's presumptive nominee (30):

Sen. Bill Cassidy, R-La. — In a joint statement with other Florida Republican lawmakers, Cassidy said on May 4: "The Republican Party of Louisiana congratulates Donald Trump on becoming the presumptive Republican nominee. We urge all Republicans to now unite in order to defeat Hillary Clinton in November."

Sen. Bob Corker, R-Tenn. — Corker offered to assist the Trump campaign on foreign policy in a May 6 interview with USA Today.

Sen. Chuck Grassley, R- Iowa — On May 4, Grassley said he plans to support the GOP nominee and wants to ensure Hillary Clinton is not the next president.

Sen. Dan Sullivan, R-Alaska — In a May 5 interview, Sullivan said: "I've had disagreements in terms of rhetoric used, in terms of policies stated, or lack there of. But, I plan on supporting the Republican nominee at this time."

Sen. Dave Vitter, R-La. — In a joint statement with other Florida Republican lawmakers, Vitter said on May 4: "The Republican Party of Louisiana congratulates Donald Trump on becoming the presumptive Republican nominee. We urge all Republicans to now unite in order to defeat Hillary Clinton in November."

Sen. Jerry Moran, R-Kan. — On May 13, Moran released the following statement: "The alternative to Donald Trump is not something I think our country can tolerate, which would be a President Clinton."

Sen. Jim Inhofe, R-Okla. — In a statement on May 4, Inhofe said, "The choice is now Trump or Clinton and I am in the anyone but Clinton camp."

Sen. John Barrasso, R-Wyo. — "It's time to listen, time to talk, and work on ways to make sure that our nominee becomes the president of the United States in November," Barrasso said on May 11.

Sen. John Cornyn, R-Texas — On May 10, Cornyn said: "I'm for the nominee of the party; if it's Donald Trump, I'll support him wholeheartedly."

Sen. John Thune, R-S.D. — Thune told reporters on May 11 he hoped House Speaker Paul Ryan "comes around" to supporting Trump.

Sen. John McCain, R-Ariz. — McCain said on May 5: "I have strong disagreements with Mr. Trump on a number of issues. I believe four years of Hillary Clinton will be an absolute disaster for this nation, as far as national security is concerned."

Sen. Joni Ernst, R-Iowa — "Whoever our nominee is coming out of the convention is who I'm going to support," said Ernst to KMA Land on May 4. "That's why I haven't endorsed any one particular candidate, because I do want to see our party unified coming out of the election, and make a really good run in the fall election." Ernst was a speaker at the Republican National Convention in July 2016.

Sen. Kelly Ayotte, R-N.H. — On May 4, Ayotte's communications director confirmed Ayotte will support the GOP nominee. "As she's said from the beginning, Kelly plans to support the nominee. As a candidate herself, she hasn't and isn't planning to endorse anyone this cycle."

Sen. Kelly Ayotte. (Graeme Jennings/Washington Examiner)

Sen. Lamar Alexander, R-Tenn. — "Donald Trump wasn't my first choice, but the people have a right to their choice, and I intend to support the Republican nominee when we have one," Alexander said on May 4.

Sen. Lisa Murkowski, R-Alaska — "I have always supported the Republican nominee for president," Murkowski said on May 4. "Elections are about choices and while Hillary Clinton is not my choice—with her clear record against Alaska's priorities—Donald Trump has made numerous inappropriate statements in the past that are troubling. Now, he needs to shift his focus to unite the Republicans around conservative policies that will bring economic growth and prosperity back to our nation."

Sen. Mike Crapo, R-Idaho — At a May 12 event, Crapo officially announced he was supporting Trump.

Sen. Mike Enzi, R-Wyo. — On May 13, Enzi released the following statement: "The Republican nomination process allows the people to choose the candidate that will represent them and the party in the presidential race. It has become clear that Donald Trump is their choice. I will support the party's candidate."

Sen. Mike Rounds, R-S.D. — Rounds said in a May 4 statement he "fully intends to support the Republican Candidate for President of the United States."

Sen. Pat Roberts, R-Kan. — In an emailed statement to the Topeka-Capitol Journal on May 4, Roberts said, "I intend to support the GOP nominee."

Sen. Pat Toomey, R-Pa. — In a May 9 article, Toomey wrote he felt "inclined to support the nominee" of the Republican Party, even though Trump wasn't his first pick. Toomey added that his support for Trump didn't mean he "always agree[d] with him" and suggested their differences may come to be be "irreconcilable" in the future.

Sen. Rand Paul, R-Ky. — "I took a pledge when I ran for president to not run as an independent candidate and to support the Republican nominee," Paul said on May 17. "I stand by that pledge, and I think that anybody who signs their word to a document ought to take seriously before they sign a document."

Sen. Roger Wicker, R-Miss. — "Donald Trump is the presumptive Republican nominee, and I intend to support him," said Wicker on May 4. "The voters have spoken, and now is the time to unite."

Sen. Ron Johnson, R-Wis. — Johnson said on the May 16 episode of The Mike Daly Show: "I intend to support the Republican nominee. That's what I've said. I intend to support the Republican nominee." Johnson was a speaker at the Republican National Convention in July 2016.

Sen. Roy Blunt, R-Mo. — On May 4, Michael LaRosa tweeted, "Sen. Roy Blunt's office confirms: "He will support the Republican nominee. If Trump is the nominee, Senator Blunt will support him."

Sen. Shelley Moore Capito, R-W.Va. — "I'm going to support Donald Trump, but the intensity of my support will be gauged on what I hear tomorrow and how he moved forward," Capito said on May 11 before the Capitol Hill meeting with Trump. Capito was a speaker at the Republican National Convention in July 2016.

Sen. Steve Daines, R-Mont. — In a May 4 statement to the Gazette, Daines' office said the senator will support Trump. "Donald Trump is not my first choice, or even my second for president, but we must defeat Hillary in November."

Sen. Susan Collins, R-Maine — Following Trump's controversial comments regarding the heritage of a Trump University judge, Collins told the New Yorker's Ryan Lizza it was unlikely but possible she would vote for Hillary Clinton over Trump on June 9.

Sen. Thad Cochran, R-Miss. — "I will support our presidential nominee because electing Republicans, from the president to the local level, is the best way to promote our principles: individual liberty, strong national defense, secure borders and effective governance," Cochran said on May 5, according to the Associated Press.

Sen. Tim Scott, R-S.C. — On May 4, Scott told the Post and Courier, "I've always said I would support the nominee, and nothing has changed."

Sen. Tom Cotton, R-Ark. — "I've long said that I will support the Republican nominee because we can't afford a third Obama-Clinton term," said Cotton on May 5. Cotton was a speaker at the Republican National Convention in July 2016.

Senators who announced their support of the GOP nominee before May 4, the day Donald Trump became the party's presumptive nominee (9):

Sen. Dan Coats, R-Ind. — In Dec. 2015, retiring Sen. Coats "said he would support Republican presidential candidate Donald Trump if he clinches the Republican nomination," according to ABC-Indiana.

Sen. James Lankford, R-Okla. — Lankford pledged his support to the GOP nominee on March 28, but clarified a difference between "support" and "endorsement." A Lankford spokesman added that the senator's primary goal was to defeat Hillary Clinton.

Sen. Jim Risch, R-Idaho — "I have voted in every presidential race over the past half-century and I have always voted for the Republican candidate and I intend to do so this time. I am hoping that it's a candidate other than Donald Trump," Risch said on March 8.

Sen. John Boozman, R-Ark. — "I'll support the candidate, regardless of who we pick, whether it's Donald Trump- it certainly would be a lot better presidency," Boozman said on April 3.

Sen. John Hoeven, R-N.D. — Hoeven's office confirmed with the Examiner on May 20 that his March 28 statement to NBC News still holds: "Senator Hoeven is not endorsing in the presidential race. He will support the nominee of the party."

Sen. Johnny Isakson, R-Ga. — According to Politico, an Isakson aide said the senator "has said all along that he'll support the ticket."

Sen. Marco Rubio, R-Fla. — "I've always said I'm going to support the Republican nominee, and that's especially true now that it's apparent that Hillary Clinton is going to be the Democratic candidate," Rubio said on April 20. The Florida senator reaffirmed his stance with CNN's Jake Tapper on May 26, and added he would speak on behalf of Trump at the Republican convention in July if asked. Rubio was a speaker at the Republican National Convention in July 2016.

Sen. Richard Shelby, R-Ala. — "Sen. (Richard) Shelby does not plan to endorse in the primary, but will support whoever wins the Republican nomination because any of our candidates will be better for America than Hillary Clinton or Bernie Sanders," a Shelby spokesperson told AL.com on March 7.

Sen. Thom Tillis, R-N.C. — "Any of the candidates we have on their worst day, is better than Senator Clinton on her best," Tillis said on March 8.

Senators who won't say if they support Donald Trump (2):

Sen. Cory Gardner, R-Colo. — In March, Gardner told the Wall Street Journal: "The Republican nominee will do better than Hillary Clinton any day, and I'll support the Republican nominee." Following the Republican National Convention in July 2016, Gardner told reporters he "certainly will not be voting for Hillary Clinton." While he declined to say if he would vote for Trump, Gardner said "a no vote is giving the victor, whoever that may be, the win without your participation."

Sen. Ted Cruz, R-Texas — In an interview with conservative talk show host Glenn Beck, Cruz said on May 10, "We'll see what happens as the months go forward, I think we need to watch and see what the candidates say and do." Cruz was a speaker at the Republican National Convention in July 2016, and declined to endorse Trump.

Republican House Members

House members who have endorsed Donald Trump (23):

Rep. Bill Shuster, R-Pa. — Per a press release, Shuster formally endorsed the GOP nominee on April 28. "The people of the 9th Congressional District, the Commonwealth of Pennsylvania, and states across the nation have made their voices heard, and I join them in supporting Donald Trump for President." Additionally, in a joint statement with eight other House chairmen, Shuster said on May 13: "There is a path to winning in November, and it comes through unity. To solidify this partnership, we endorse Mr. Trump as the Republican nominee for President and call upon all Americans to support him."

Rep. Brian Babin, R-Texas — On May 12, Babin said he is "totally at peace" and "unequivocally endorsing Donald Trump for the presidency of the United States."

Rep. Candice Miller, R-Mich. — Miller endorsed Trump on April 28: "I think Donald Trump is going to be the Republican nominee, and I absolutely believe he's going to be the president." Additionally, in a joint statement with eight other House chairmen, Miller said on May 13: "There is a path to winning in November, and it comes through unity. To solidify this partnership, we endorse Mr. Trump as the Republican nominee for President and call upon all Americans to support him."

Rep. Chris Collins, R-N.Y. — "Trump has clearly demonstrated that he has both the guts and the fortitude to return our nation's jobs stolen by China, take on our enemies like ISIS, Iran, North Korea and Russia, and most importantly, re-establish the opportunity for our children and grandchildren to attain the American Dream, Chris told the Buffalo News on February 24. "That is why I am proud to endorse him as the next president of the United States." Collins was a speaker at the Republican National Convention in July 2016.

Rep. Diane Black, R-Tenn. — Black said she would support the nominee on March 27, and on May 4 added: "I will support our presumptive nominee, Donald J. Trump, in the general election and call on Republicans across Tennessee to do the same. After eight years of failed liberal policies, this is a time for our party to unite and put a conservative in the White House."

Rep. Duncan Hunter, R-Calif. — Hunter told Politico on February 24, "I'm in, and I've been in," for Trump, adding, "We don't need a policy wonk as president. We need a leader as president,"

Rep. Jeb Hensarling, R-Texas — In a joint statement with eight other House chairmen, Hensarling said on May 13: "There is a path to winning in November, and it comes through unity. To solidify this partnership, we endorse Mr. Trump as the Republican nominee for President and call upon all Americans to support him."

Rep. Jeff Miller, R-Fla. — Miller said he stands "with Donald Trump," and supports "his candidacy for president," on April 28. Additionally, in a joint statement with eight other House chairmen, Miller said on May 13: "There is a path to winning in November, and it comes through unity. To solidify this partnership, we endorse Mr. Trump as the Republican nominee for President and call upon all Americans to support him."

Rep. John Duncan, R-Tenn. — Duncan "enthusiastically" endorsed Trump on April 30.

Rep. Kevin Cramer, R-N.D. — Cramer endorsed Trump on April 3. Barry Bennett, a senior Trump adviser, called the endorsement "a huge win."

Rep. Lamar Smith, R-Texas — In a joint statement with eight other House chairmen, Smith said: "There is a path to winning in November, and it comes through unity. To solidify this partnership, we endorse Mr. Trump as the Republican nominee for President and call upon all Americans to support him."

Rep. Lou Barletta, R-Pa. — "Donald Trump's voice is resonating with average Americans who feel their voice has been lost by their party," Barletta told the Washington Post on March 22. "I believe this will become a new Republican Party, one that we should embrace. We should be the party of working men and women, the party of America first."

Rep. Mike Conaway, R-Texas — In a joint statement with eight other House chairmen, Conaway said on May 13: "There is a path to winning in November, and it comes through unity. To solidify this partnership, we endorse Mr. Trump as the Republican nominee for President and call upon all Americans to support him."

Rep. Paul Ryan, R-Wis. — On June 2, Ryan said he will "be voting for [Trump] this fall" in a column for his hometown newspaper. Ryan cited his "goal has been to unite the party so we can win in the fall," and said he feels "confident" Trump will "help us turn the ideas in this agenda into laws to help improve people's lives." Shortly after the column was published, Ryan's press secretary confirmed Ryan endorsing Trump via a tweet: "We're not playing word games, feel free to call it an endorsement." Ryan was a speaker at the Republican National Convention in July 2016.

Rep. Pete Sessions, R-Texas — In a joint statement with eight other House chairmen, Sessions said: "There is a path to winning in November, and it comes through unity. To solidify this partnership, we endorse Mr. Trump as the Republican nominee for President and call upon all Americans to support him."

Rep. Renee Ellmers, R-N.C. — Ellmers endorsed Trump on March 21 per a statement, asking "friends and supporters to ignore the negativity coming from the Washington establishment and to get behind Donald Trump as the Republican nominee."

Rep. Ryan Zinke, R-Mont. — Zinke endorsed Trump on May 25, saying "it's time to officially endorse Donald Trump" on Fox. Zinke was a speaker at the Republican National Convention in July 2016.

Rep. Scott DesJarlais, R-Tenn. — On February 29, DesJarlais said in a statement: "While there are certainly things that I admire and respect in each of the remaining candidates, I believe Donald Trump is the candidate best poised to make America great again. As such, I was proud to cast my vote for Mr.Trump and look forward to supporting the eventual Republican nominee whomever that might be."

Rep. Steve Chabot, R-Ohio — In a joint statement with eight other House chairmen, Chabot said on May 13: "There is a path to winning in November, and it comes through unity. To solidify this partnership, we endorse Mr. Trump as the Republican nominee for President and call upon all Americans to support him."

Rep. Ted Yoho, R-Fla. — Yoho endorsed Trump on June 11. "I am excited to stand not just behind the American people's choice for the next President of the United States of America but my personal choice Mr. Donald Trump," Yoho said in his endorsement statement. Yoho added he is looking "forward to helping [Trump] make America not only Great again but better."

Rep. Tom Marino, R-Pa. — Marino called his endorsement of Trump "one of my life-changing moments" in an interview with Politico on February 29.

Rep. Tom Price, R-Ga. — In a joint statement with eight other House chairmen, Price said: "There is a path to winning in November, and it comes through unity. To solidify this partnership, we endorse Mr. Trump as the Republican nominee for President and call upon all Americans to support him."

Rep. Tom Reed, R-N.Y. — On March 16, Reed endorsed Trump per a statement: "Now is the time to unite behind the candidate who I believe will be our nominee, Donald Trump."

House members who will not endorse Donald Trump (13):

Rep. Adam Kinzinger, R-Ill. — Kinzinger told WGN Radio on May 16 a president Trump would mean enemies would "fear us less."

Rep. Barbara Comstock, R-Va. — "I can't support Hillary Clinton, and I won't be, but Donald Trump needs to earn the votes of me and many others," Comstock said on May 6.

Rep. Carlos Curbelo, R-Fla. — On May 5, Curbelo told Miami-Herald in an emailed statement, "I have no plans of supporting either of the presumptive nominees."

Rep. Fred Upton, R-Mich. — On June 14, Upton told WHTC-AM he is not planning to endorse Trump, and added that the GOP presumptive nominee has gone "off the track."

Rep. Ileana Ros-Lehtinen, R-Fla. — According to the Miami-Herald, Ros-Lehtinen told NTN24 in April she didn't "plan to vote for" Trump. "I don't feel in my heart that I could support him. But I can't support Hillary Clinton," she said.

Rep. Justin Amash, R-Mich. — In March, Amash said Trump "cares about power, he doesn't really care about things like the Constitution, and I'm concerned that he could push us in a very dangerous direction."

Rep. Kay Granger, R-Texas — On May 13, Granger said, "I'm not endorsing at this point. I endorsed Jeb Bush. I'm not going to endorse again."

Rep. Mark Sanford, R-S.C. — According to the Post and Courier, Sanford said Trump's "candidacy is certainly one [he] cannot support in a March 1 email to the Wall Street Journal.

Rep. Reid Ribble, R-Wis. — Ribble reiterated his opposition to Trump on May 17 and called the relationship "unrecoverable."

Rep. Richard Hanna, R-N.Y — On March 9, Hanna said he won't endorse Trump, and said Trump's campaign was "beneath the dignity of the American people."

Rep. Richard Hudson, R-N.C. — Hudson's office confirmed with the Examiner on May 20 the congressman's "no endorsement policy."

Rep. Robert Dold, R-Ill. — On March 18, Dold said he's focused on his re-election campaign. "Honestly, I'm focused on one race. I'm focused on one race alone."

Rep. Scott Rigell, R-Va. — On March 1, Rigell called Donald Trump a "con man" and said he can't support him for president.

Sen. Ted Cruz and Donald Trump. (AP Photo)

House members who announced their support of the GOP nominee after May 4, the day Donald Trump became the party's presumptive nominee (138):

Rep. Adrian Smith, R-Neb. — On May 6, Smith told students during a visit to their school that he will support whoever the Republican Party elects as its nominee and is coming to grips that it will most likely be Donald Trump. Smith added: "He's going to need more than just Republicans and those partisan Republicans to support him. He needs folks in the middle and so I hope that he can engage the American people in a way that can show a bright future for America."

Rep. Alexander Mooney, R-W. Va. — On May 5, Mooney said he would support Trump and added, "Hillary Clinton and her policies on coal, the Second Amendment, and other issues are very much against where West Virginians stand so that's where I'm going to stand."

Rep. Andy Harris, R-Md. — On May 14, Harris said "everyone's going to come together in the end," and that he's "101 percent enthusiastic" about Trump.

Rep. Austin Scott, R-Ga. — On May 24, Scott said, "I think that with good leadership in the house and with Mr. Trump as president, I think that you're going to see America continue to be great and move back into that leadership role in the world."

Rep. Bill Flores, R-Texas — On June 8, Flores said he can't endorse Trump, but said he will still vote for the GOP presumptive nominee. He added Trump should "start addressing the issues of the country insted of bashing judges."

Rep. Bill Johnson, R-Ohio — On May 5, Johnson said he will now support front-runner Trump saying the country needs someone who understands business and Trump is schooled on regulatory and tax return.

Rep. Bill Posey, R-Fla. — Posey announced he would support the GOP nominee on May 15.

Rep. Billy Long, R-Mo. — "He's kicked everybody's butt, won far more votes, and we can WIN with him. Voters are fed up with Washington, with politics as usual," Long said on May 8, according to the Huffington Post.

Rep. Blake Farenthold, R-Texas — "I think we're going to see some conservative motion in the country. And the thing I'm really most excited about is Donald Trump is a deal maker. I spent my six years in Congress with a 'my way or the highway' president. I want a dealmaker who will come in and will get some stuff done and I think that's what the American people want. They're tired of gridlock in Washington," Farenthold told MSNBC after Cruz and Kasich dropped out of the presidential race.

Rep. Bob Gibbs, R-Ohio — On May 5, a Gibbs spokesman said the congressman would work with the GOP nominee "to institute policies that enhance our national security and promote economic growth to provide opportunities for all Americans," according to the Dayton Daily News.

Rep. Bradley Byrne, R-Ala. — "I think we have a choice between two people: Donald Trump or Hillary Clinton. If you're a Republican, that's a pretty clear choice. You pick the Republican nominee who is Donald Trump by virtue of these primaries and you don't pick Hillary Clinton," Byrne said on May 7.

Rep. Brett Guthrie, R-Ky. — Guthrie said that he would support Trump if he is the nominee on May 6.

Rep. Cathy McMorris Rodgers, R-Wash. — On May 18, Rodgers said she would support Trump.

Rep. Charles Boustany, R-La. — In a joint statement with other Florida Republican lawmakers, Boustany said on May 4: "The Republican Party of Louisiana congratulates Donald Trump on becoming the presumptive Republican nominee. We urge all Republicans to now unite in order to defeat Hillary Clinton in November."

Rep. Charles Fleischmann, R-Tenn. — Fleischmann said on May 4 he will support the GOP presumptive nominee.

Rep. Chris Stewart, R-Utah — "We must unite around conservative principles to get our country back on track," Stewart said in a May 4 statement.

Rep. Curt Clawson, R-Fla. — Clawson said on May 11, "As our party finalizes the nomination process, important policy decisions and a vice-presidential selection in the weeks ahead will go a long way to uniting our party.

Rep. Cynthia Lummis, R-Wyo. — Lummis announced she was supporting Trump on May 23, according to the Star-Tribune.

Rep. Dan Newhouse, R-Wash. — On May 19, Newhouse said, "It looks like Trump is going to be the Republican nominee. I don't agree with him on everything, but I think our nation needs a change after eight years of the Obama Administration."

Rep. Dana Rohrabacher, R-Calif. — Rohrabacher said on May 16 he would support the Republican nominee.

Rep. Darrell Issa, R-Calif. — Issa announced he was supporting Trump on May 5, per the L.A. Times.

Rep. Darin LaHood, R-Ill. — LaHood said May 10, "I'm going to support the Republican nominee. Is appears it's going to be him (Trump)."

Rep. Dave Reichert, R-Wash. — On May 4, Reichert said he would work with the next president regardless of who it was.

Rep. David Brat, R-Va. — On May 17, it was reported that Brat said he planned on supporting the presumed nominee Donald Trump in the general election.

Rep. David Jolly, R-Fla. — Jolly's office confirmed with the Examiner on May 23 the congressman will vote for the GOP nominee. "He will not be supporting Hillary Clinton."

Rep. David Joyce, R-Ohio — On May 12, according to Ashtabula Star Beacon, Joyce said he would support the Republican nominee.

Rep. David McKinley, R-W. Va. — On May 7, McKinley said, "I may not agree with everything Trump says, but if anything else he defends coal. I'm hoping in the next three months he will announce who is Cabinet members might be in his administration, and I think this will make people feel better about him as president.

Rep. David Rouzer, R-N.C. — Rouzer's office confirmed with the Examiner on May 20 the congressman will vote for the GOP nominee.

Rep. David Schweikert, R-Ariz. — Schweikert's office confirmed with the Examiner on May 20 the congressman will vote for the GOP nominee.

Rep. David Trott, R-Mich. — Trott announced his support for Trump on May 4, and said he was "confident" the GOP would unite around the nominee.

Rep. David Young, R-Iowa — On May 5, Young reaffirmed that he would support Trump as the party's nominee.

Rep. Dennis Ross, R-Fla. — On May 9, Ross said he would support Trump as the nominee.

Rep. Devin Nunes, R-Calif. — Per a spokesman on May 11, Nunes said he will "endorse whomever is named the official nominee at the convention."

Rep. Don Young, R-Ala. — Young said he will support Trump and that has motto has been "anybody but Hillary," on May 4.

Rep. Doug Collins, R-Ga. — A Collins spokesman said the congressman supports Trump on May 6.

Rep. Doug LaMalfa, R-Calif. — On May 11, a LaMalfa spokesman told the SF Chronicle that the congressman plans to "support the nominee."

Rep. Edward Royce, R-Calif. — In an emailed statement to the Orange County Register on May 13, Royce said: "I have always voted for the Republican nominee and will do so this year because a third term of the Obama-Clinton administration would be disastrous for Southern California families and our nation."

Rep. Erik Paulsen, R-Minn. — Paulsen said on May 5 he "expects to vote for the nominee."

Rep. Evan Jenkins, R-W. Va. — On May 16, Jenkins said it was a "clear choice" to vote for the presumptive nominee.

Rep. French Hill, R-Ark. — On May 4, a Hill spokesman said the congressman would support whoever the nominee is.

Rep. Garret Graves, R-La. — On May 13, Garett said he would support Trump.

Rep. Gary Palmer, R-Ala. — On May 16, Palmer said he would support "whoever the Republican nominee is."

Rep. George Holding, R-N.C. — Holding told McClatchy on May 11 he will support Trump. "I have said from the get-go I would support the nominee," Holding said. "I want (Trump) to be successful and I'll do my part [to make sure] he's successful."

Rep. Greg Walden, R-Ore. — Walden released the following statement on May 12: "The American people know the damage done by this administration here at home and around the world. The last thing I want is to give the same Obama/Clinton/Sanders philosophy another four years in charge. While I may disagree with the rhetoric Mr. Trump uses and some policy positions, he is the better option than Hillary Clinton in the White House. That's why all along I've said I intend to support the GOP nominee."

Rep. Gregg Harper, R-Miss. — On May 4, Harper said, "I will support the nominee of the party."

Rep. Gus Bilirakis, R-Fla. — On May 10, a spokesperson for Bilirakis said, "The congressman has said he will support the GOP nominee, whoever that may be."

Rep. Hal Rogers, R-Ky. — Rogers' office sent a statement to the Examiner on July 18: "Congressman Rogers supports Donald Trump as the presumptive GOP nominee."

Rep. James Renacci, R-Ohio — On May 5, Renacci said, "I will support the Republican nominee."

Rep. Jason Chaffetz, R-Utah — "It happened. So the reality is it'll be Donald Trump against Hillary Clinton and that's a no-brainer for me. Hillary Clinton as president is a very scary scenario so I think the country will see it the same way. It wasn't my first choice but my No. 1 goal is not allow Hillary Clinton to become the next president of the United States," Chaffetz said on May 4.

Rep. Jim Bridenstine, R-Okla. — On May 7, Bridenstine said he will support Trump as the Republican nominee.

Rep. Jim Jordan, R-Ohio — On May 5, Jordan said, "We need to support whoever our nominee is."

Rep. Jim Sensenbrenner, R-Wis. — On May 10, Sensenbrenner said, "Yes, I support Donald Trump, he won the nomination fair and square."

Rep. Joe Barton, R-Texas — On May 13, Barton said, "If he's our nominee, I'll support him and vote for him."

Rep. Joe Heck, R-Nev. — On May 5, Heck said, "Look I'll support whoever the nominee is coming out of the convention."

Rep. Joe Wilson, R-S.C. — On May 11, Wilson said, "I will acknowledge that we do have different factions, but that's how we grow."

Rep. John Culberson, R-Texas — Culberson's office sent a statement to the Examiner on July 18: "I always have and always will support the Republican nominee. The party should unify behind the presumptive nominee, Donald Trump, to defeat Hillary Clinton."

Rep. John Fleming, R-La. — In a joint statement with other Florida Republican lawmakers, Fleming said on May 4: "The Republican Party of Louisiana congratulates Donald Trump on becoming the presumptive Republican nominee. We urge all Republicans to now unite in order to defeat Hillary Clinton in November."

Rep. John Kline, R-Minn. — "Congressman Kline intends to support the GOP nominee." a Kline spokesperson said on May 4.

Rep. John Mica, R-Fla. — Mica said he will support Trump "or the nominee" on May 15.

Rep. John Shimkus, R-Ill — On May 7, a spokesman said Shimkus intends to support the nominee.

Rep. Joseph Pitts, R-Pa. — "I'll vote for [Trump]," Pitts said on May 20, adding he wasn't certain he could fully endorse Trump.

Rep. Keith Rothfus, R-Pa. — On May 5, Rothfus' staff told the Morning Call the congressman plans to support Trump.

Rep. Ken Buck, R-Colo. — On May 6, Buck said, "I look forward to Mr. Trump demonstrating that he supports limited government, free market principles, and family values. We must beat Hillary Clinton, whose agenda for America will limit our freedom and liberty."

Rep. Ken Calvert, R-Calif. — On May 12, Calvert said, "Donald Trump is our presumptive nominee and I intend to support him."

Rep. Kenny Marchant, R-Texas — On May 13, Marchant said, "I'm going to support the nominee."

Rep. Kevin McCarthy, R-Calif. — According to Politico, McCarthy signed up to be Trump delegate on May 9. McCarthy was a speaker at the Republican National Convention in July 2016.

Rep. Kevin Yoder, R-Kan. — On May 5, Yoder said Trump "wasn't my first choice," but that Clinton is his reason for backing Trump.

Rep. Kristi Noem, R-S.D. — On May 4, Noem said: "I don't always agree with Mr. Trump, but he is the presumptive nominee of our party and I will support him, because I believe in our vision for a smaller government, a system that genuinely respects taxpayers, and greater freedom for all."

Rep. Larry Bucshon, R-Ind. — A Bucshon spokesperson said the congressman will support the GOP nominee on May 6, according to the Indy Star.

Rep. Leonard Lance, R-N.J. — On May 7, Lance said Trump will have his "enthusiastic support" for president.

Rep. Louie Gohmert, R-Texas — On May 20, Gohmert said: "I will always set aside everything personal and vote for the better candidate, and in this case, between Hillary Clinton and Donald Trump, it is Donald Trump."

Rep. Luke Messer, R-Ind. — On May 6, Messer said he expects to support Trump in the fall.

Rep. Lynn Jenkins, R-Kan. — Trump "has a more conservative vision than the destructive vision espoused by Hillary Clinton," Jenkins said on June 7, adding she will continue to support Trump.

Rep. Lynn Westmoreland, R-Ga. — "It's either Donald Trump or Hillary Clinton," Westmoreland said on May 4.

Rep. Mario Diaz-Balart, R-Fla. — Balart said he will support Trump "or the nominee" on May 15.

Rep. Mark Meadows, R-N.C. — On May 11, WLOS reported that Meadows said he will support Donald Trump as the nominee.

Rep. Mark Walker, R-N.C. — On May 8, Walker told Fox8 he believed "there are some things about [Trump] I could align with from a conservative basis." Walker also added he hoped "to put 100 percent" behind Trump.

Rep. Markwayne Mullin, R-Okla. — On May 13, Mullins said, "He's our nominee. He's the only one there."

Rep. Marlin Stutzman, R-Ind. — On April 29, Stutzman told Breitbart: "I will not support our party trying to pull a candidate out who hasn't run, it has to be either Ted Cruz or Donald Trump."

Rep. Marsha Blackburn, R-Tenn. — On May 12, Blackburn said, "I think he's going to be the next president of the United States and he would be an incredible president of the United States." Blackburn was a speaker at the Republican National Convention in July 2016.

Rep. Michael Burgess, R-Texas — Burgess issued a statement on May 4, saying he plans to put all "support behind the Republican nominee and do whatever is asked of me to ensure a Republican is elected president."

Rep. Michael McCaul, R-Texas — McCaul confirmed he hasn't yet endorsed Donald Trump on May 25, and told CNN's Wolf Blitzer he assumed Trump was going to be the nominee. "And I have said I will support the nominee." McCaul was a speaker at the Republican National Convention in July 2016.

Rep. Michael Mulvaney, R-S.C. — In a May 11 report, Mulvaney said, "I'm more than happy to support Donald Trump for president and support the Republican nominee."

Rep. Michael Simpson, R-Idaho — "I'll support the Republican nominee, and presumably it's Donald Trump now," Simpson said on May 6. "I happen to be in the 'Never Hillary' camp."

Rep. Michael Turner, R-Ohio — On May 12, Turner released a statement that said he "will be endorsing the Republican nominee."

Rep. Mike Bishop, R-Mich. — On May 4, Bishop said he was "prepared to support the nominee the Republicans voters" had chosen.

Rep. Mike Kelly, R-Pa. — In a May 5 report, Kelly said he voted for Trump and urged Republicans to unite against Clinton.

Rep. Mike Pompeo, R-Kan. — On May 5, a spokesman said Pompeo "will support the nominee of the Republican Party because Hillary Clinton cannot be president of the United States."

Rep. Mike Rogers, R-Ala. — On May 16, Rogers said, "I'm going to support [Trump]."

Rep. Mimi Walters, R-Calif. — On May 16, a Walters spokesperson said the congresswoman will vote for Trump. "She believes a Hillary Clinton or Bernie Sanders presidency is unacceptable and would damage our nation for decades to come," a spokesperson said.

Rep. Mo Brooks, R-Ala. — On May 16, Brooks said he plans to vote for "all of the Republicans on the ballot in November."

Rep. Morgan Griffith, R-Va. — Griffith said he plans to support Trump on May 5. "Having four more years of policies like those of [President] Barack Obama is damaging to our country and our region."

Rep. Patrick McHenry, R-N.C. — The Charlotte Observer reported on May 26 that McHenry "will support presumptive GOP nominee Donald Trump," even though "he disagrees with some of Trump's positions, especially whether Trump will be an ardent opponent of abortion and backer of Israel."

Rep. Paul Cook, R-Calif. — On May 16, Cook said, "I will support Donald Trump just as I have supported every Republican presidential nominee."

Rep. Paul Gosar, R-Ariz. — Gosar's office sent a statement to the Examiner on May 23 saying that while the congressman "doesn't see eye to eye with Trump, the country can't afford Clinton."

Rep. Peter King, R-N.Y. — On May 15, King told CBS he's supporting Trump. "There's real chance — I want him to make his policy more coherent. I'm endorsing him, going to vote for him. Before he I can actively campaign, I have too see much more on foreign policy."

Rep. Phil Roe, R-Tenn. — "As I've said from the beginning, I will support our nominee. It's time for Republicans to unite, and I am enthusiastically supporting Donald Trump. I look forward to helping him in any way that I can to take back the White House in November," Roe said in a May 5 statement.

Rep. Ralph Abraham, R-La. — In a joint statement with other Florida Republican lawmakers, Abraham said on May 4: "The Republican Party of Louisiana congratulates Donald Trump on becoming the presumptive Republican nominee. We urge all Republicans to now unite in order to defeat Hillary Clinton in November."

Rep. Randy Forbes, R-Va. — On May 6, Forbes said, "if Donald Trump is the nominee, I will be supporting Donald Trump. Forbes also added while he thought Trump to be the presumptive nominee, "we have conventions and that's where they make the nomination."

Rep. Randy Hultgren, R-Ill. — On July 11, Hultgren announced he would support the GOP nominee and looked forward to further discussion at the Republican National Convention in Cleveland. "Let me be clear: I will support the Republican nominee. I stand strong in my belief that Hillary Clinton is the wrong choice for President."

Rep. Randy Neugebauer, R-Texas — Neugebauer's office sent a statement to the Examiner on June 20: "It has and will continue to be my position that we need to unite behind the Republican nominee. Mr. Trump may be unpredictable, but Mrs. Clinton will be predictably bad for America. We cannot stand by and watch while she is electd to continue President Obama's liberal, government-knows-best agenda."

Rep. Randy Weber, R-Texas — In a May 5 statement, Weber said, "we must set our sights on doing what is necessary to prevent Hillary Clinton from taking the White House in November."

Rep. Richard Nugent, R-Fla. — Nugent said he will support Trump "or the nominee" on May 15.

Rep. Rick Crawford, R-Ark. — On May 31, Crawford told KASU he "absolutely will" support Trump. "I'm going to stand with Arkansas, I'm going to stand with my constituents, and I'm going to support the Republican nominee."

Rep. Rob Bishop, R-Utah — "If Trump is the official nominee, then yes, he would be preferable to Hillary Clinton," Bishop said on May 4.

Rep. Rob Wittman, R-Va. — On May 4, Wittman said it's "critically important" for people to decide the party nominee. "I have maintained throughout this primary season that I will support that choice. What is most important to me, looking ahead to November, is principle."

Rep. Robert Aderholt, R-Ala. — On May 16, Aderholt said he will vote for Trump.

Rep. Robert Pittenger, R-N.C. — In an email to the Charlotte Observer on May 4, Pittenger said, "I fully support Donald Trump, nominee for the Republican party,"

Rep. Rodney Davis, R-Ill. — A spokesperson said Davis will support the party nominee on May 7.

Rep. Rodney Frelinghuysen, R-N.J. — Frelinghuysen said he will support the GOP nominee on May 7.

Rep. Roger Williams, R-Texas — Williams said on May 13 he "endorsed Trump because he's our candidate," and added, "it comes down to the Supreme Court."

Rep. Ron DeSantis, R-Fla. — DeSantis said he will support Trump "or the nominee" on May 15.

Rep. Ryan Costello, R-Pa. — A Costello aide told the Philadelphia Inquirer on May 5 it's "vital" the Republican Party wins in November.

Rep. Scott Garrett, R-N.J. — On May 5, Garrett's campaign manager said, "Garrett intends to support the Republican nominee."

Rep. Sam Graves, R-Mo. — Graves' office confirmed with the Examiner on May 20 that the congressman will "support whoever the GOP nominee is."

Rep. Scott Perry, R-Pa. — Perry said he will support Trump as the GOP nominee in a May 5 statement to the Morning Call.

Rep. Steve King, R-Iowa — On June 7, King told the Des Moines Register, "If the presidential election were today, I would vote for Donald Trump."

Rep. Steve Scalise, R-La. — In a joint statement with other Florida Republican lawmakers, Scalise said on May 4: "The Republican Party of Louisiana congratulates Donald Trump on becoming the presumptive Republican nominee. We urge all Republicans to now unite in order to defeat Hillary Clinton in November."

Rep. Steve Stivers, R-Ohio — In a statement to the Examiner on May 20, Stivers said, "Though I do not agree with him on every issue, I do intend to support the Republican nominee this November."

Rep. Steve Womack, R-Ark. — On May 4, a Womack spokesperson said Womack "believe[s] the Republican Party must rally around and support our nominee."

Rep. Thomas Massie, R-Ky. — On May 6, Massie said, "I'll support the nominee and I'm going to presume it's Donald Trump."

Rep. Tim Huelskamp, R-Kan. — Huelskamp said he left a July 7 meeting with Trump believing Trump is "going to beat Hillary Clinton." Huelskamp added that "four years of another Clinton in the White House would be a disastorous doubling down of the failed policies of the past eight," and closed with, "Onward to victory for us in November!"

Rep. Tim Walberg, R-Mich. — Walberg said he will "vote for the nominee" on May 4.

Rep. Todd Rokita, R-Ind. — On May 5, Rokita said he supports Trump for president, but "for no other reason than it's all relative to other choices in the race."

Rep. Todd Young, R-Ind. — On May 6, Young's campaign manager said: "Todd Young has consistently said he intends to support the Republican nominee for president because we cannot have a third term of Barack Obama with Hillary Clinton as our next president."

Rep. Tom Emmer, R-Minn. — "Congressman Emmer has long said that regardless of who wins he would support the GOP Presidential nominee, and that stands as true today as it was when this race began," an Emmer spokesperson said on May 4.

Rep. Tom Graves, R-Ga. — Graves' office sent the following statement to the Examiner on July 14: "Rep. Graves will support the nominee."

Rep. Tom MacArthur, R-N.J. — "Millions of party members have nominated our presumptive nominee and he would be far better than Hillary Clinton," MacArthur said on May 16.

Rep. Tom McClintock, R-Calif. — On May 16, McClintock said: "I'd rather have somebody who I'm not entirely sure would do the right thing as opposed to someone like Hillary Clinton, who I'm assured would do the wrong thing."

Rep. Tom Rice, R-S.C. — On July 7, Rice told the Idaho Statesman he was supporting Trump. "I think that's what people love about him, that what you see is what you get," Rice said. "He's our nominee, and I'm supporting him."

Rep. Trent Franks, R-Ariz. — "As a Conservative, I may not be able to trust Donald Trump to do the right thing. But I can trust Hillary Clinton to do the wrong thing every time," Franks said on May 11.

Rep. Thomas Rooney, R-Fla. — On May 4, Rooney told Politico, "He is our nominee and I support him and the Republican Party."

Rep. Tom Cole, R-Okla. — "I'm a lot more concerned about Hillary Clinton than I am about Donald Trump," Cole said on May 22.

Rep. Trent Kelly, R-Miss. — "Congressman Kelly looks forward to supporting Donald Trump in November. Also, Congressman Kelly is a Trump delegate to the Convention," Kelly's campaign office said in a statement sent to the Examiner on July 11.

Rep. Trey Gowdy, R-S.C. — On May 20, Gowdy said he was "happy to endorse Donald Trump."

Rep. Vern Buchanan, R-Fla. — On May 10, Buchanan told the Herald-Tribune he will support Trump. "The bottom line is the people selected him, it's a democracy. I'm going to support their wishes."

Rep. Vicky Hartzler, R-Mo. — A Hartzler spokesman confirmed with the Examiner on July 11 that Hartzler "will be supporting the Republican nominee."

Rep. Virginia Foxx, R-N.C. — On May 8, Foxx's communications director told a Fox affiliate the congressman will support Trump if he is the party's nominee. "The goal of the Republican Party should be to beat Hillary Clinton. We can't afford four more years of the flawed policies of the Obama administration, and that's what a Clinton presidency would entail. It would be devastating to our country."

U.S. Capitol Dome (Graeme Jennings/Washington Examiner)

House members who announced their support of the GOP nominee before May 4, the day Donald Trump became the party's presumptive nominee (32):

Rep. Blaine Luetkemeyer, R-Mo. — Luetkemeyer said he'll support whomever the GOP nominates for president on March 1, according to the St. Louis Dispatch.

Rep. Bob Goodlatte, R-Va. — On March 3, Goodlatte said, "I still think it's a wide open race. I'm going to support the nominee of our party."

Rep. Brad Wenstrup, R-Ohio — On Dec. 9, Wenstrup said, "If he's the Republican nominee, I would support him."

Rep. Crescent Hardy, R-Nev. — On April 28, Hardy said he will support on the nominee on Fox News 5.

Rep. Daniel Donovan, R-N.Y. — On March 16, Donovan said he'd support Trump if he's the GOP nominee. "I think it's very important. I think the goal here is that Hillary Rodham Clinton doesn't become the next president of the United States."

Rep. Doug Lamborn, R-Colo. — Lamborn said he would support the nominee on March 7.

Rep. Earl Carter, R-Ga. — On Feb. 25, Carter said, "I don't have any trouble at all, if he is the nominee, in supporting Donald Trump."

Rep. Elise Stefanik, R-N.Y. — On March 16, a spokesman for Stefanik said the congresswoman looks forward to supporting the Republican nominee this fall.

Rep. Frank Guinta, R-N.H. — On March 30, Guinta said Trump is "a good thing" for the country.

Rep. Jackie Walorski, R-Ind. — On May 3, Walorski said she would support the Republican nominee.

Rep. Jason Smith, R-Mo. — On March 20, Smith said he would support the Republican nominee.

Rep. Jeff Duncan, R-S.C. — On Feb. 24, Duncan said "I'm in, and I've been in," with supporting Trump as the nominee.

Rep. John Carter, R-Texas — On Aug. 19, Carter said, "People ask me, who are you supporting for president? I say, the Republican nominee."

Rep. John Ratcliffe, R-Texas — Ratcliffe released a statement on May 3: "I said all along I would support our party's nominee."

Rep. Kevin Brady, R-Texas — On Jan. 11, Brady said, "I'm supporting our nominee."

Rep. Lee Zeldin, R-N.Y. — In a March 3 interview, Zeldin said, "If Donald Trump is the candidate against Hillary Clinton, then I will be supporting Donald Trump."

Rep. Mark Amodei, R-Nev. — The Las Vegas Sun reported Amodei previously stated he would support Trump if he became the nominee.

Rep. Martha Roby, R-Ala. — Roby said she plans to vote for Trump in November.

Rep. Matt Salmon, R-Ariz. — On March 22, Salmon said, "If he becomes the nominee, and it's between someone who most of us think should be indicted, versus Donald Trump, it's a no-brainer."

Rep. Mike Bost, R-Ill. — In a May 2 report, Bost said he would support Trump over Clinton because of his economic policy.

Rep. Raul Labrador, R-Idaho — On April 29, Labrador said he will support the GOP nominee, but noted "it will be hard to be all out" for Trump.

Rep. Rick Allen, R-Ga. — "I would rather work with Donald Trump than Hillary Clinton, I can tell you that right now," Allen said on March 11.

Rep. Robert Hurt, R-Va. — On April 7, Hurt told ABC 13 that if Trump is the nominee, he will support him. "I have some real concerns about a lot of the things that he has said. I think if that the majority of the Republicans in this country nominate a person then I will respect that because I am a Republican."

Rep. Robert Latta, R-Ohio — Latta told the Courier on March 9 he "will support whoever the Republican nominee is."

Rep. Rod Blum, R-Iowa — In July 2015, Blum said he will support Trump.

Rep. Scott Tipton, R-Colo. — Tipton indicated he would support the GOP nominee on March 7.

Rep. Sean Duffy, R-Wis. — On March 31, Duffy told CNN he would support Trump if he became the party nominee. Duffy was a speaker at the Republican National Convention in July 2016.

Rep. Steve Fincher, R-Tenn. — Fincher said he "will fully support the Republican nominee, including Mr. Trump" on February 27.

Rep. Steve Pearce, R-N.M. — Pearce said in April he would back Trump if he was the GOP nominee.

Rep. Steven Palazzo, R-Miss. — On May 3, Palazzo's office released a statement: "Tonight I am announcing my support for Donald Trump as the Republican nominee for president of the United States. It is time that all Republicans, no matter their preferred candidate, unite behind Mr. Trump to take on Hillary Clinton in November."

Rep. Susan Brooks, R-Ind. — On March 20, Brooks said she will support the GOP nominee. "I think it's exciting (and) I think we need to listen to the voters, but I'm going to support whoever the Republican nominee is coming out of the convention."

Rep. Walter Jones, R-N.C. — In a Dec. 2015 interview with Fox News, Jones said Donald Trump would be his "second choice" if Rand Paul didn't move forward in the campaign.

114th U.S. Congress. (Photo courtesy of Speaker.gov, via Wikimedia Commons)

House members who won't say if they endorse Donald Trump (40):

Rep. Ander Crenshaw, R-Fla. — Crenshaw has not publicly said if he intends to support Trump, but he is one of the 99 Florida delegates pledged to support Trump at the Republican National Convention in Cleveland.

Rep. Andy Barr, R-Ky. — Barr has not publicly said if he intends to support Trump.

Rep. Ann Wagner, R-Mo. — On May 5, Wagner said she is not ready to endorse Trump, but added that she has "absolutely no intention of supporting Hillary Clinton - not now, not ever."

Rep. Barry Loudermilk, R-Ga. — Loudermilk has not publicly said if he intends to support Trump.

Rep. Bill Huizenga, R-Mich. — Huizenga told the Detroit News on May 12 he's withholding his support for Trump, and added he's "not interested in having a president who is going to ignore the constitutional structure that we have."

Rep. Bruce Poliquin, R-Maine — Poliquin said on May 13 he believes Trump will "win it all," but hasn't yet said if he plans to support Trump.

Rep. Bruce Westerman, R-Ark. — Westerman has not publicly said if he intends to support Trump.

Rep. Charles Dent, R-Pa. — On May 5, Dent said he remained "extremely concerned" about Trump's divisive rhetoric, and added that he believed the GOP nominee has "a lot of fence-mending to do."

Rep. Chris Gibson, R-N.Y. — In December 2015, Gibson questioned giving Trump an army, but has not publicly said if he intends to support Trump.

Rep. Chris Smith, R-N.J. — Smith has not publicly said if he intends to support Trump.

Rep. Dan Benishek, R-Mich. — Benishek has not publicly said if he intends to support Trump.

Rep. Daniel Webster, R-Fla. — Webster has not publicly said if he intends to support Trump.

Rep. David Valadao, R-Calif. — On May 12, Valadao said he's "focused on representing his constituents in Washington, D.C., and not on politics."

Rep. Ed Whitfield, R-Ky. — Whitfield has not publicly said if he intends to support Trump.

Rep. Frank LoBiondo, R-N.J. — LoBiondo has not publicly said if he intends to support Trump.

Rep. Frank Lucas, R-Okla. — Lucas has not publicly said if he intends to support Trump.

Rep. Glenn Grothman, R-Wis. — "I pray every night that whoever our nominee is, whoever our president is would be a person of intelligence, integrity, ideas and courage. I'll let this process play out," Grothman said on March 25.

Rep. Glenn Thompson, R-Pa. —Thompson has not publicly said if he intends to support Trump.

Rep. Jaime Herrera Beutler, R-Wash. — On May 6, Herrera Beutler said she's "open" to supporting Trump, but added she wants to "see some things first."

Rep. Jeff Denham, R-Calif. — Denham previously tweeted he will support whoever the GOP nominee is, but hasn't publicly commented on supporting Trump.

Rep. Jeffrey Fortenberry, R-Neb. — Fortenberry told NPR on May 10: "I believe Donald Trump has to earn my support by giving substantive answers on economic security and national security and upholding the tradition of social conservation, which is so important to me and many other people throughout the country."

Rep. Jody Hice, R-Ga. — Hice has not publicly said if he intends to support Trump.

Rep. John Katko, R-N.Y. — "Any candidate has to earn my vote," Katko said in a May 5 statement, "including Donald Trump."

Rep. John Moolenaar, R-Mich. — Moolenaar has not publicly said if he intends to support Trump. Moolenaar told the Detroit News on April 22 he plans "to support the nominee coming out of Cleveland."

Rep. Mac Thornberry, R-Texas — Thornberry declined a Trump endorsement on May 13.

Rep. Martha McSally, R-Ariz. — McSally said she will spend time "determining what kind of man [Trump] is" on May 23.

Rep. Mia Love, R-Utah — Love told CNN's Jake Tapper on July 12 that in order to gain her support, Trump must have a "positive agenda."

Rep. Michael Fitzpatrick, R-Pa. — "I think Trump will find common ground with people to get to practical solutions and get people back to work," said Fitzpatrick on May 5.

Rep. Mike Coffman, R-Colo. — "Rep. Coffman has not endorsed or voiced support for Donald Trump," Coffman's political director said on May 18.

Rep. Patrick Meehan, R-Pa. — On May 5, Meehan's office said the congressman is "focused on [his] race and an agenda for families in Pennsylvania," in a statement.

Rep. Patrick Tiberi, R-Ohio — "I hope to see a strong conservative, policy-oriented and presidential approach" from Trump, Tiberi said in a June 1 statement. The congressman added he is looking forward to the Republican National Convention.

House Speaker Paul Ryan. (Graeme Jennings/Washington Examiner)

Rep. Pete Olson, R-Texas — Olson has not publicly said if he intends to support Trump.

Rep. Peter Roskam, R-Ill. — Roskam's office told the Examiner on July 14 the congressman will be at the Republican National Convention in Cleveland and added Trump "has 4 months to make his case to the voters of this country, including Rep. Roskam." Roskam's office noted the two "have lots of substantive policy differences."

Rep. Rob Woodall, R-Ga. — Woodall has not publicly said if he intends to support Trump.

Rep. Sam Johnson, R-Texas — Johnson has not publicly said if he intends to support Trump.

Rep. Stephen Knight, R-Calif. — On May 16, Knight said "we've still got a convention."

Rep. Steve Russell, R-Okla. — Russell's office confirmed with the Examiner on May 20 that the congressman hasn't said if he intends to support Trump.

Rep. Ted Poe, R-Texas — Poe has not publicly said if he intends to support Trump.

Rep. Tim Murphy, R-Pa. — While Murphy has not publicly said if he intends to support Trump, the congressman attended a June 11 Trump rally in Pennsylvania and tweeted "#MakeAmericaGreatAgain in #MoonTownship!"

Rep. Will Hurd, R-Texas — On May 6, Hurd said in a statement he plans to "reserve" his endorsement of Trump "until the presumptive nominee shows he can respect women and minorities and presents a clear plan to protect our homeland." Hurd added, "I hope in the next seven months he can show this because I am not supporting Hillary Clinton."