Over 90% of the 235 Democrats in the House of Representatives now either support impeachment proceedings or have signaled they are open to supporting impeachment proceedings against President Trump. House Speaker Nancy Pelosi announced a formal impeachment inquiry of Mr. Trump in September soon after he admitted he had asked the Ukrainian president to investigate former Vice President Joe Biden and his son. On October 31, the House is voting on a resolution establishing the procedures for the impeachment inquiry's next phase, the first time lawmakers will vote on the probe.

Pelosi has said the president's actions represent a betrayal of his oath of office, of national security and of the integrity of U.S. elections.

In late July, the House Judiciary Committee said in a court filing that it was actively considering articles of impeachment related to the special counsel's report, which pointed to ten times Mr. Trump might have obstructed justice during the Russia investigation. The committee has been fighting for access to material redacted from the special counsel's report in order to decide whether to move forward with the process.

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Although initially, just a handful of Democrats had called for Mr. Trump's impeachment, a growing number of lawmakers began to consider opening an impeachment inquiry against the president in light of special counsel Robert Mueller's report on Russian interference in the 2016 election.

While that investigation found that the Trump campaign did not conspire with Russia to influence the election, neither did it exonerate the president of obstruction of justice. Mueller identified 11 instances of possible obstruction, but he made no determination on whether the president had obstructed justice, having concluded that doing so would not be in keeping with a legal opinion held by the Justice Department on the treatment of a sitting president.

Attorney General William Barr determined the president did not commit obstruction of justice.

See the list below of the Democratic lawmakers who support impeachment proceedings or have signaled they're open to supporting impeachment proceedings against Mr. Trump.

Representative Rashida Tlaib, D-Michigan, seen May 9, 2019, in Washington, D.C. Getty

House of Representatives

Democrats

Alma Adams (North Carolina)

Pete Aguilar (California) Colin Allred (Texas) Cindy Axne (Iowa) Nanette Barragán (California) Karen Bass (California) Joyce Beatty (Ohio) Ami Bera (California) Don Beyer (Virginia) Sanford Bishop (Georgia) Earl Blumenauer (Oregon) Suzanne Bonamici (Michigan)

Brendan Boyle (Pennsylvania) Anthony Brindisi (New York) Anthony Brown (Maryland) Julia Brownley (California) Cheri Bustos (Illinois) G.K. Butterfield (North Carolina) Salud Carbajal (California) Tony Cárdenas (California) Matt Cartwright (Pennsylvania) Andre Carson (Indiana) Ed Case (Hawaii) Sean Casten (Illinois) Kathy Castor (Florida) Joaquin Castro (Texas) Judy Chu (California) David Cicilline (Rhode Island) Gil Cisneros (California) Sean Casten (Illinois) Katherine Clark (Massachusetts) Yvette Clarke (New York) William Lacy Clay (Missouri) Emanuel Cleaver, II (Colorado) James Clyburn (South Carolina) Steve Cohen (Tennessee) Bonnie Coleman (New Jersey) Gerry Connolly (Virginia) Jim Cooper (Tennessee) Lou Correa (California) Jim Costa (California) Joe Courtney (Connecticut) T.J. Cox (California) Angie Craig (Minnesota) Charlie Crist (Florida) Jason Crow (Colorado) Henry Cuellar (Texas) Joe Cunningham (South Carolina) Sharice Davids (Kansas) Danny Davis (Illinois) Susan Davis (California) Madeleine Dean (Pennsylvania) Peter DeFazio (Oregon) Diana DeGette (Colorado) Suzan Del Bene (Washington) Rosa DeLauro (Connecticut) Antonio Delgado (New York) Val Demings (Florida) Mark DeSaulnier (California) Ted Deutch (Florida) Debbie Dingell (Michigan) Lloyd Doggett (Texas) Mike Doyle (Pennsylvania) Eliot Engel (New York) Veronica Escobar (Texas) Adriano Espaillat (New York) Anna Eshoo (California) Dwight Evans (Pennsylvania) Abby Finkenauer (Iowa) Lizzie Fletcher (Texas) Bill Foster (Illinois) Lois Frankel (Florida) Marcia Fudge (Ohio) Tulsi Gabbard (Hawaii) Ruben Gallego (Arizona) John Garamendi (California) Jesús "Chuy" Garcia (Illinois) Jared Golden (Colorado) Jimmy Gomez (California) Vicente Gonzalez (Texas) Josh Gottheimer (New Jersey) Al Green (Texas) Raúl Grijalva (Arizona) Deb Haaland (New Mexico) Josh Harder (California) Jahana Hayes (Connecticut) Denny Heck (Washington) Brian Higgins (New York) Katie HIll (California) Jim Himes (Connecticut) Kendra Horn (Oklahoma) Steven Horsford (Nevada) Chrissy Houlahan (Pennsylvania) Steny Hoyer (Maryland) Jared Huffman (California) Sheila Jackson Lee (Texas) Pramila Jayapal (Washington) Hakeem Jeffries (New York) Eddie Bernice Johnson (Texas) Hank Johnson(Georgia) Marcy Kaptur (Ohio) Bill Keating (Massachusetts) Robin Kelly (Illinois) Joe Kennedy III (Massachusetts) Ro Khanna (California) Dan Kildee (Michigan) Derek Kilmer (Washington) Andy Kim (New Jersey) Ron Kind (Wisconsin) Ann Kirkpatrick (Arizona) Raja Krishnamoorthi (Illinois) Annie Kuster (New Hampshire) Conor Lamb (Pennsylvania) Jim Langevin (Rhode Island) Rick Larsen (Washington) John Larson (Connecticut) Brenda Lawrence (Michigan) Al Lawson (Florida) Barbara Lee (California) Susie Lee (Nevada) Andy Levin (Michigan) Mike Levin (California) John Lewis (Georgia) Ted Lieu (California) Dan Lipinski (Illinois) Dave Loebsack (Iowa) Zoe Lofgren (California) Nita Lowey (New York) Alan Lowenthal (California) Ben Ray Luján (New Mexico)

Elaine Luria (Virginia) Steven Lynch (Massachusetts) Tom Malinowski (New Jersey) Carolyn Maloney (New York) Sean Maloney (New York) Doris Matsui (California) Betty McCollum (Minnesota) Donald McEachin (Virginia) Jerry McNerny (California) Jim McGovern (Massachusetts) Gregory Meeks (New York) Grace Meng (California) Gwen Moore (Michigan) Joe Morelle (New York) Seth Moulton (Massachusetts) Debbie Mucarsel-Powell (Florida) Stephanie Murphy (Florida) Jerry Nadler (New York) Grace Napolitano (California) Richard Neal (Massachusetts) Joseph Neguse (Colorado) Donald Norcross (New Jersey) Eleanor Holmes Norton (Washington, D.C.) Alexandria Ocasio-Cortez (New York) Tom O'Halleran (Arizona) Ilhan Omar (Minnesota) Frank Pallone (New Jersey) Jimmy Panetta (California) Chris Pappas (New Hampshire) Bill Pascrell (New Jersey) Donald Payne (New Jersey) Nancy Pelosi (California) Ed Perlmutter (Colorado) Dean Phillips (Minnesota) Scott Peters (California) Dean Phillips (Minnesota) Chellie Pingree (Massachusetts) Mark Pocan (Wisconsin) Katie Porter (California) Ayanna Pressley (Massachusetts) David Price (North Carolina) Mike Quigley (Illinois) Jamie Raskin (Maryland) Kathleen Rice (New York) Cedric Richmond (Louisiana) Lisa Blunt Rochester (Delaware) Max Rose (New York) Harley Rouda (California) Lucille Roybal-Allard (California) Raul Ruiz (California) Bobby Rush (Illinois) Tim Ryan (Ohio) Linda Sanchez (California) John Sarbanes (Maryland) Mary Gay Scanlon (Pennsylvania) Jan Schakowsky (Illinois) Adam Schiff (California) Brad Schneider (Illinois) Kurt Schrader (Oregon) Kim Schrier (Washington) Bobby Scott (Virginia) David Scott (Georgia) José Serrano (New York) Terri Sewell (Alabama) Donna Shalala (Florida) Brad Sherman (California) Mikie Sherrill (New Jersey) Albio Sires (New Jersey) Elissa Slotkin (Michigan) Adam Smith (Washington) Darren Soto (Florida) Abigail Spanberger (D-VA) Jackie Speier (California) Greg Stanton (Arizona) Haley Stevens (Michigan) Eric Swalwell (California) Tom Suozzi (New York) Mark Takano (California) Bennie Thompson (Mississippi) Mike Thompson (California) Dina Titus (Nevada) Rashida Tlaib (Michigan) Lori Trahan (Massachusetts) Paul Tonko (New York) Norma Torres (California) Xochiti Torres Small (New Mexico) Lori Trahan (Massachusetts) David Trone (Maryland) Lauren Underwood (Illinois) Juan Vargas (California) Marc Veasey (Texas) Filemon Vela (Texas) Nydia Velázquez (New York) Pete Visclosky (Indiana) Debbie Wasserman Schultz (Florida) Maxine Waters (California) Bonnie Watson Coleman (New Jersey) Peter Welch (Vermont) Jennifer Wexton (Virginia) Susan Wild (Pennsylvania) Frederica Wilson (Florida) John Yarmuth (Kentucky)

Republicans

Mark Amodei (Nevada)

Independents

Justin Amash (Michigan)

Senate

Democrats

Cory Booker (New Jersey) Kirsten Gillibrand (New York) Kamala Harris (California) Elizabeth Warren (Massachusetts)

Independents

Bernie Sanders (Vermont)

Rebecca Kaplan, Kimberly Brown and Grace Segers contributed to this report