LAST UPDATED ON March 4 at 7:31 p.m.
RECENT UPDATES — Rep. Eric Cantor (R-Va.), Sen. Tom Coburn (R-Okla.), Rep. Steven LaTourette (R-Ohio), Sen. Lamar Alexander (R-Tenn.) — (see note at bottom of page), Rep. Dan Burton (R-Ind.), Rep. Fred Upton (R-Mich.), Rep. Tim Walberg (R-Mich.), Rep. Billy Long (R-Mo.), Rep. Jaime Herrera Beutler (R-Wash.), Rep. David Rivera (R-Fla.), Rep. Erik Paulsen (R-Minn.), Rep. Dan Benishek (R-Mich.), Rep. Pete Olson (R-Texas)
NOTE — Endorsements in 2008 only noted if the member was serving in Congress at that time
Mitt Romney (80)
Sen. Kelly Ayotte (R-N.H.)
Sen. Roy Blunt (R-Mo.)
Sen. Scott Brown (R-Mass.)
Sen. Richard Burr (R-N.C.) (endorsed Sen. John McCain in 2008)
Sen. Tom Coburn (R-Okla.) (endorsed McCain in 2008)
Sen. Thad Cochran (R-Miss.) (endorsed Romney in 2008)
Sen. Orrin Hatch (R-Utah) (endorsed Romney in 2008)
Sen. John Hoeven (R-N.D.)
Sen. Mike Johanns (R-Neb.)
Sen. Mark Kirk (R-Ill.) (endorsed McCain in 2008)
Sen. John McCain (R-Ariz.) (the 2008 GOP nominee)
Sen. Lisa Murkowski (R-Alaska) (endorsed Romney in 2008)
Sen. Rob Portman (R-Ohio)
Sen. Jim Risch (R-Idaho)
Sen. John Thune (R-S.D.) (endorsed McCain in 2008)
Rep. Sandy Adams (R-Fla.)
Rep. Rodney Alexander (R-La.) (endorsed Romney in 2008)
Rep. Mark Amodei (R-Nev.)
Rep. Charles Bass (R-N.H.)
Rep. Dan Benishek (R-Mich.) (Initially endorsed Herman Cain; endorsed Romney on Jan. 20)
Rep. Judy Biggert (R-Ill.) (endorsed former New York City Mayor Rudy Giuliani in 2008)
Rep. Brian Bilbray (R-Calif.) (endorsed Romney in 2008)
Rep. Rob Bishop (R-Utah) (endorsed Romney in 2008)
Rep. Diane Black (R-Tenn.)
Rep. Mary Bono Mack (R-Calif.) (endorsed Giuliani in 2008)
Rep. Ken Calvert (R-Calif.)
Rep. Dave Camp (R-Mich.) (endorsed Romney in 2008)
Rep. John Campbell (R-Calif.) (endorsed Romney in 2008)
Rep. Eric Cantor (R-Va.)
Rep. Jason Chaffetz (R-Utah)
Rep. Howard Coble (R-N.C.) (endorsed Romney in 2008)
Rep. Mike Conaway (R-Texas) (endorsed Romney in 2008) (Initially backed Perry in 2012)
Rep. Ander Crenshaw (R-Fla.)
(endorsed Romney in 2008)
Rep. Mario Diaz-Balart (R-Fla.) (endorsed McCain in 2008)
Rep. Robert Dold (R-Ill.)
Rep. John Duncan (R-Tenn.) (endorsed ex-Sen. Fred Thompson (R-Tenn.) in 2008)
Rep. Jeff Flake (R-Ariz.) (endorsed McCain in 2008)
Rep. Virginia Foxx (R-N.C.) (endorsed Romney in 2008)
Rep. Jim Gerlach (R-Pa.) (endorsed Giuliani in 2008)
Rep. Kay Granger (R-Texas) (endorsed Romney in 2008)
Rep. Tim Griffin (R-Ark.)
Rep. Michael Grimm (R-N.Y.)
Rep. Nan Hayworth (R-N.Y.)
Rep. Joe Heck (R-Nev.)
Rep. Wally Herger (R-Calif.)
(endorsed Romney in 2008)
Rep. Jaime Herrera Beutler (R-Wash.)
Rep. Bill Huizenga (R-Mich.)
Rep. Darrell Issa (R-Calif.) (endorsed McCain in 2008)
Rep. Leonard Lance (R-N.J.)
Rep. Steven LaTourette (R-Ohio) (endorsed McCain in 2008)
Rep. Jerry Lewis (R-Calif.) (endorsed Giuliani in 2008)
Rep. Billy Long (R-Mo.)
Rep. Cynthia Lummis (R-Wyo.)
Rep. Connie Mack (R-Fla.) (endorsed Romney in 2008)
Rep. Thaddeus McCotter (R-Mich.) (endorsed Thompson in 2008; dropped White House bid in September)
Rep. Patrick McHenry (R-N.C.)
Rep. Buck McKeon (R-Calif.)
(endorsed Romney in 2008)
Rep. Cathy McMorris Rodgers (R-Wash.)
Rep. John Mica (R-Fla.)
Rep. Jeff Miller (R-Fla.) (endorsed Thompson and later McCain in 2008)
Rep. Pete Olson (R-Texas)
Rep. Erik Paulsen (R-Minn.)
Rep. Jim Renacci (R-Ohio)
Rep. Phil Roe (R-Tenn.)
Rep. Hal Rogers (R-Ky.) (endorsed Romney in 2008)
Rep. Mike Rogers (R-Ala.) (endorsed Romney in 2008)
Rep. Mike Rogers (R-Mich.)
Rep. Dana Rohrabacher (R-Calif.) (endorsed Romney in 2008)
Rep. Todd Rokita (R-Ind.)
Rep. Tom Rooney (R-Fla.)
Rep. Ileana Ros-Lehtinen (R-Fla.) (endorsed McCain in 2008)
Rep. Aaron Schock (R-Ill.)
Rep. Mike Simpson (R-Idaho) (endorsed Romney in 2008)
Rep. Lamar Smith (R-Texas) (endorsed Romney in 2008)
Rep. Mike Turner (R-Ohio)
Rep. Fred Upton (R-Mich.) (endorsed McCain in 2008)
Rep. Tim Walberg (R-Mich.)
Rep. Greg Walden (R-Ore.)
Rep. Ed Whitfield (R-Ky.) (endorsed Romney in 2008)
Rep. Steve Womack (R-Ark.)
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Newt Gingrich (11)
Rep. Joe Barton (R-Texas)
Rep. Michael Burgess (R-Texas)
Rep. Trent Franks (R-Ariz.) (endorsed Rep. Duncan Hunter (R-Calif.) in 2008 and initially backed Bachmann in 2012)
Rep. Andy Harris (R-Md.)
Rep. Jack Kingston (R-Ga.) (endorsed Romney in 2008)
Rep. Tom Price (R-Ga.) (endorsed Romney in 2008)
Rep. Phil Gingrey (R-Ga.) (endorsed Romney in 2008)
Rep. David Rivera (R-Fla.)
Rep. Austin Scott (R-Ga.)
Rep. Lynn Westmoreland (R-Ga.) (endorsed Thompson, and later, Romney, in 2008)
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Ron Paul (3)
Sen. Rand Paul (R-Ky.)
Rep. Justin Amash (R-Mich.)
Rep. Walter Jones (R-N.C.)
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Rick Santorum (3)
Rep. Lou Barletta (R-Pa.)
Rep. Tom Marino (R-Pa.)
Rep. Glenn Thompson (R-Pa.)