John Kasich is staying in the Republican presidential race, his campaign said Tuesday.

After finishing a distant third in Tuesday's Indiana primary, the Kasich campaign's chief strategist, John Weaver, sent out a memo announcing the Ohio governor will remain in the race until Trump secures the GOP nomination.

Trump, the GOP frontrunner, secured a massive win in the state. The race was called moments after the polls closed.

"Tonight's results are not going to alter Gov. Kasich's campaign plans," Weaver wrote in the memo. "Our strategy has been and continues to be one that involves winning the nomination at an open convention."

Click through images of John Kasich throughout his career:

16 PHOTOS John Kasich through his career See Gallery KASICH: I'm staying in the race until Trump hits the magic number Photo by: gotpap/STAR MAX/IPx 2019 1/18/19 Governor John Kasich is seen in Los Angeles, CA. JIMMY KIMMEL LIVE! - "Jimmy Kimmel Live!" airs every weeknight at 11:35 p.m. EST and features a diverse lineup of guests that include celebrities, athletes, musical acts, comedians and human interest subjects, along with comedy bits and a house band. The guests for Thursday, December 19, included Margot Robbie ("Bombshell"), Governor John Kasich ("It's Up to Us: Ten Little Ways We Can Bring About Big Change"), and musical guest White Reaper. (Randy Holmes via Getty Images) JIMMY KIMMEL, GOVERNOR JOHN KASICH AUSTIN, TX - MARCH 09: John Kasich speaks onstage at Conversations About America's Future: Former Governor John Kasich during the 2019 SXSW Conference and Festivals at Austin City Limits Live at the Moody Theater on March 8, 2019 in Austin, Texas. (Photo by Amy E. Price/Getty Images for SXSW) MT. PLEASANT, SC - FEBRUARY 10: Republican presidential candidate John Kasich talks to an overflow crowd outside of Finn's Brick Oven Pizza February 10, 2016 in Mt. Pleasant, South Carolina. The South Carolina Republican primary will be held Saturday, February 20. (Photo by Sean Rayford/Getty Images) 11/3/95 - Rep. John R. Kasich (R-OH), seated 2nd from left, and Sen. Pete V. Domenici (R-NM) in the dark suit standing, go over their response to President Clinton's radio address just prior to recording the radio broadcast in the Senate studio. Kasich was casually dressed as the House was out of session for the weekend. (Photo by Robert A. Reeder/The Washington Post/Getty Images) D:\BOB\budget3.tif - slug: NA/BUDGET date: May 2, 1997 photog: Robert A. Reeder TWP The Rotunda of the Capitol description: GOP happy with their signed budget John R. Kasich (R-OH) is having a particularly good time during the GOP announcement of a new budget in the Rotunda of the Capitol. In front of him is Speaker Newt Gingrich. (Photo by Robert A. Reeder/The Washington Post/Getty Images) P 350430 022 2May99 Manchester, Nh John Kasich (R-Oh), At The First-In-The-Nation Primary Kick-Off Weekend. (Photo By Jonathan Elderfield/Getty Images) UNITED STATES - FEBRUARY 02: HOUSE ARMED SERVICES--John R. Kasich, R-Ohio, and Duncan Hunter, R-Calif., talk during House Armed Services Committee hearing on the president's fiscal year 2000 defence budget authorization budget request. (Photo by Douglas Graham/Congressional Quarterly/Getty Images) Former Ohio congressman John Kasich attends the Republican National Convention at the Xcel Energy Center in St. Paul, Minnesota, Wednesday, September 3, 2008. (Photo by Harry E. Walker/MCT/MCT via Getty Images) WASHINGTON, DC- Dec. 01: Governor-elect John Kasich, R-Ohio, and House Minority Leader John A. Boehner, R-Ohio, during a news conference after their meeting with other Republican members and governors-elect. Boehner is the presumed House Speaker for the 112th Congress. (Photo by Scott J. Ferrell/Congressional Quarterly/Getty Images) John Kasich, governor of Ohio, speaks during a groundbreaking ceremony for the Cleveland Medical Mart and Convention Center in Cleveland, Ohio, U.S., on Friday, Jan. 14, 2011. The Cleveland Medical Mart and Convention Center will include a 100,000 square foot medical mart and an adjoining convention center with 230,000 square feet of exhibit hall space. The facility is expected to open in September 2013. Photographer: David Maxwell/Bloomberg via Getty Images COLUMBUS, OH - MARCH 30: Ohio Governor John Kasich works long hours with staff on his new budget proposal at his office, in the Ohio State House office, Columbus, Ohio, Wednesday, March 30, 2011. Newly elected republican Ohio Governor John Kasich is working toward to balancing an Ohio budget in deficit through a budget proposal with extensive budget cuts, spending reform, and changes in labor laws, including restrictions on collective bargaining. (Photo by Melina Mara/ The Washington Post via Getty Images) US Republican presidential candidate and former Massachusetts Governor Mitt Romney (2nd L) waves alongside Ohio Republican Senator Rob Portman (L) and Ohio Governor John Kasich (R) during a campaign stop at Tom's Ice Cream Bowl in Zanesville, Ohio, on August 14, 2012. AFP PHOTO / Saul LOEB (Photo credit should read SAUL LOEB/AFP/GettyImages) UNITED STATES - AUGUST 28: Ohio Gov. John Kasich speaks at the 2012 Republican National Convention at the Tampa Bay Times Forum. (Photo By Chris Maddaloni/CQ Roll Call) COLUMBUS, OHIO - JULY 21: Ohio Governor John Kasich gives his speech announcing his 2016 Presidential candidacy at the Ohio Student Union, at The Ohio State University on July 21, 2015 in Columbus, Ohio. Kasich became the 16th candidate to officially enter the race for the Republican presidential nomination. (Photo by Ty Wright/Getty Images) CONCORD, NH - FEBRUARY 09: Republican presidential candidate Ohio Governor John Kasich waves to the crowd after speaking at a campaign gathering with supporters upon placing second place in the New Hampshire republican primary on February 9, 2016 in Concord, New Hampshire. Kasich lost the Republican primary to Donald Trump, though he upset fellow Republican governors Chris Christie and former Governor Jeb Bush. (Photo by Andrew Burton/Getty Images) Up Next See Gallery Discover More Like This HIDE CAPTION SHOW CAPTION of SEE ALL BACK TO SLIDE

Weaver called out Trump's "disrespectful ramblings" as a reason why Kasich presents a stark contrast to the Manhattan billionaire.

"The comments from Trump, on the verge of winning in Indiana, heighten the differences between Governor Kasich and his positive, inclusive approach and the disrespectful ramblings from Donald Trump," he wrote. "Prior to tonight's primary, the Kasich campaign had already secured a large plurality of Indiana delegates committed to Governor Kasich at a multi-ballot convention as part of the pre-primary delegate selection process."

"Gov. Kasich will remain in the race unless a candidate reaches 1,237 bound delegates before the Convention," he continued.

Tonight's results are not going to alter Gov. Kasich's campaign plans. Our strategy has been and continues to be one that involves winning the nomination at an open convention. The comments from Trump, on the verge of winning in Indiana, heighten the differences between Governor Kasich and his positive, inclusive approach and the disrespectful ramblings from Donald Trump.

Prior to tonight's primary, the Kasich campaign had already secured a large plurality of Indiana delegates committed to Governor Kasich at a multi-ballot convention as part of the pre-primary delegate selection process.

The Indianapolis Star wrote about our success two weeks ago. You can read about it (here).

Gov. Kasich will remain in the race unless a candidate reaches 1,237 bound delegates before the Convention.

Here's why:

I. Gov. Kasich remains the candidate best positioned to win a contested convention.

• A plurality of Trump delegates will support him after the first ballot.

• He can unite the Party better than anyone else. Trump's cynical sowing of division will render the GOP into angry, irrelevant status for decades.

II. Gov. Kasich is the only Republican who can win in November.

• Delegates want to win in November, and only Gov. Kasich can defeat Hillary Clinton. According to the Real Clear Politics polling average Clinton leads Trump by more than 6 points on average. Meanwhile, Gov. Kasich leads Clinton by over 7 points. A Trump nomination means the end of a Republican Congress and scores of local, legislative and state constitutional offices will be lost for a generation.

III. Gov. Kasich offers Republicans and Americans a refreshing choice of hope, inclusion and conservative reform.

• Nearly 60 percent of GOP voters have voted for a candidate other than Donald Trump. Republican primary voters deserve to have a choice in the remaining contests and we intend to forcefully give them one. Americans overwhelmingly want to vote for Governor Kasich in a general election. A detailed analysis of the Electoral College confirms Governor Kasich is the only one who can win. Both Trump and Cruz would lose to Clinton by considerable margins in a head-to-head race, winning just 210 and 206 Electoral College votes, respectively. By contrast, Kasich comfortably defeats Clinton, racking up 304 Electoral College votes to her 234. Read the full analysis (here).

IV. The future of the Republican Party and America is at stake. Gov. Kasich will not simply give up.

• The Mad Hatter Gibberish pushed by Trump during the primary would weaken America. His proposals would divide us, put American workers in the unemployment line and put our national security at risk. And a Clinton presidency would be at least four more years of international drift, a liberal Supreme Court, and more big government at the expense of job creators, entrepreneurs and families.

V. Gov. Kasich has the experience, vision and leadership abilities needed in our next President.

• A Kasich Presidency means a conservative Supreme Court; the return of money, power and influence to the states; a balanced budget and tax reduction, unleashing job creators; faith that our nation's challenges can be solved by families and local communities; and a White House that prioritizes doing what's right over what's political expedient.

This is the stark choice that confronts Republicans between now and when a nominee is chosen in Cleveland. Gov. Kasich looks forward to continuing to compete with Donald Trump in the upcoming primaries through California on June 7th.

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