| Mike Rogers (R) source | Incumbent | U.S. House Alabama District 3 | Primary, General | Won primary |
| Dale Strong (R) source | Incumbent | U.S. House Alabama District 5 | Primary, General | Won primary |
| Gary Palmer (R) source | Incumbent | U.S. House Alabama District 6 | Primary, General | Won primary |
| Eli Crane (R) source | Incumbent | U.S. House Arizona District 2 | Primary | |
| Andy Biggs (R) source | Incumbent | U.S. House Arizona District 5 | Primary | |
| Juan Ciscomani (R) source | Incumbent | U.S. House Arizona District 6 | Primary | |
| Abraham Hamadeh (R) source | Open seat | U.S. House Arizona District 8 | Primary | |
| Paul Gosar (R) source | Incumbent | U.S. House Arizona District 9 | Primary | |
| Rick Crawford (R) source | Incumbent | U.S. House Arkansas District 1 | Primary, General | Won primary |
| Vince Fong (R) source | Open seat | U.S. House California District 20 (special) | Primary, General | Won general |
| Vince Fong (R) source | Incumbent | U.S. House California District 20 | Primary, General | Won primary |
| Lauren Boebert (R) source | Incumbent | U.S. House Colorado District 4 | Primary | |
| Dave Williams (R) source | Open seat | U.S. House Colorado District 5 | Primary | |
| Gabe Evans (R) source | Challenger | U.S. House Colorado District 8 | Primary | |
| Matt Gaetz (R) source | Incumbent | U.S. House Florida District 1 | Primary | |
| Gus M. Bilirakis (R) source | Incumbent | U.S. House Florida District 12 | Primary | |
| Anna Paulina Luna (R) source | Incumbent | U.S. House Florida District 13 | Primary, General | Won primary |
| Vern Buchanan (R) source | Incumbent | U.S. House Florida District 16 | Primary | |
| Greg Steube (R) source | Incumbent | U.S. House Florida District 17 | Primary, General | Won primary |
| Scott Franklin (R) source | Incumbent | U.S. House Florida District 18 | Primary, General | Won primary |
| Byron Donalds (R) source | Incumbent | U.S. House Florida District 19 | Primary, General | Won primary |
| Brian Mast (R) source | Incumbent | U.S. House Florida District 21 | Primary | |
| Mario Diaz-Balart (R) source | Incumbent | U.S. House Florida District 26 | Primary | |
| Maria Elvira Salazar (R) source | Incumbent | U.S. House Florida District 27 | Primary | |
| Carlos Gimenez (R) source | Incumbent | U.S. House Florida District 28 | Primary, General | Won primary |
| John Rutherford (R) source | Incumbent | U.S. House Florida District 5 | Primary | |
| Michael Waltz (R) source | Incumbent | U.S. House Florida District 6 | Primary | |
| Cory Mills (R) source | Incumbent | U.S. House Florida District 7 | Primary | |
| Bill Posey (R) source | Incumbent | U.S. House Florida District 8 | Primary | Not on the ballot primary |
| Brian Jack (R) source | Open seat | U.S. House Georgia District 3 | Primary, Primary Runoff | Won primary |
| Mike Bost (R) source | Incumbent | U.S. House Illinois District 12 | Primary, General | Won primary |
| Mary Miller (R) source | Incumbent | U.S. House Illinois District 15 | Primary, General | Won primary |
| Darin LaHood (R) source | Incumbent | U.S. House Illinois District 16 | Primary, General | Won primary |
| Jim Baird (R) source | Incumbent | U.S. House Indiana District 4 | Primary, General | Won primary |
| Erin Houchin (R) source | Incumbent | U.S. House Indiana District 9 | Primary, General | Won primary |
| Tracey Mann (R) source | Incumbent | U.S. House Kansas District 1 | Primary | |
| Ron Estes (R) source | Incumbent | U.S. House Kansas District 4 | Primary | |
| Hal Rogers (R) source | Incumbent | U.S. House Kentucky District 5 | Primary, General | Won primary |
| Steve Scalise (R) source | Incumbent | U.S. House Louisiana District 1 | Primary | |
| Clay Higgins (R) source | Incumbent | U.S. House Louisiana District 3 | Primary | |
| Mike Johnson (R) source | Incumbent | U.S. House Louisiana District 4 | Primary | |
| Julia Letlow (R) source | Incumbent | U.S. House Louisiana District 5 | Primary | |
| Austin Theriault (R) source | Challenger | U.S. House Maine District 2 | Primary | |
| Jack Bergman (R) source | Incumbent | U.S. House Michigan District 1 | Primary | |
| John James (R) source | Incumbent | U.S. House Michigan District 10 | Primary | |
| John Moolenaar (R) source | Incumbent | U.S. House Michigan District 2 | Primary | |
| Bill Huizenga (R) source | Incumbent | U.S. House Michigan District 4 | Primary | |
| Tim Walberg (R) source | Incumbent | U.S. House Michigan District 5 | Primary | |
| Lisa McClain (R) source | Incumbent | U.S. House Michigan District 9 | Primary | |
| Brad Finstad (R) source | Incumbent | U.S. House Minnesota District 1 | Primary | |
| Tom Emmer (R) source | Incumbent | U.S. House Minnesota District 6 | Primary | |
| Michelle Fischbach (R) source | Incumbent | U.S. House Minnesota District 7 | Primary | |
| Pete Stauber (R) source | Incumbent | U.S. House Minnesota District 8 | Primary | |
| Trent Kelly (R) source | Incumbent | U.S. House Mississippi District 1 | Primary, General | Won primary |
| Michael Guest (R) source | Incumbent | U.S. House Mississippi District 3 | Primary, General | Won primary |
| Mike Ezell (R) source | Incumbent | U.S. House Mississippi District 4 | Primary, General | Won primary |
| Ann Wagner (R) source | Incumbent | U.S. House Missouri District 2 | Primary | |
| Mark Alford (R) source | Incumbent | U.S. House Missouri District 4 | Primary | |
| Sam Graves (R) source | Incumbent | U.S. House Missouri District 6 | Primary | |
| Eric Burlison (R) source | Incumbent | U.S. House Missouri District 7 | Primary | |
| Jason Smith (R) source | Incumbent | U.S. House Missouri District 8 | Primary | |
| Ryan K. Zinke (R) source | Incumbent | U.S. House Montana District 1 | Primary | |
| Troy Downing (R) source | Open seat | U.S. House Montana District 2 | Primary | |
| John J. Lee (R) source | Challenger | U.S. House Nevada District 4 | Primary | |
| Jeff Van Drew (R) source | Incumbent | U.S. House New Jersey District 2 | Primary | Won primary |
| Yvette Herrell (R) source | Challenger | U.S. House New Mexico District 2 | Primary | Won primary |
| Nicholas J. LaLota (R) source | Incumbent | U.S. House New York District 1 | Primary, General | Won primary |
| Nicole Malliotakis (R) source | Incumbent | U.S. House New York District 11 | Primary, General | Won primary |
| Elise Stefanik (R) source | Incumbent | U.S. House New York District 21 | Primary, General | Won primary |
| Brandon Williams (R) source | Incumbent | U.S. House New York District 22 | Primary, General | Won primary |
| Nick Langworthy (R) source | Incumbent | U.S. House New York District 23 | Primary, General | Won primary |
| Claudia Tenney (R) source | Incumbent | U.S. House New York District 24 | Primary | |
| Claudia Tenney source | Incumbent | U.S. House New York District 24 | Primary | |
| Anthony D’Esposito (R) source | Incumbent | U.S. House New York District 4 | Primary, General | Won primary |
| Brad Knott (R) source | Open seat | U.S. House North Carolina District 13 | Primary Runoff, General | Won primary runoff |
| Timothy K. Moore (R) source | Open seat | U.S. House North Carolina District 14 | Primary, General | Won primary |
| Virginia Foxx (R) source | Incumbent | U.S. House North Carolina District 5 | Primary, General | Won primary |
| Addison McDowell (R) source | Open seat | U.S. House North Carolina District 6 | Primary, General | Won primary |
| Richard Hudson (R) source | Incumbent | U.S. House North Carolina District 9 | Primary, General | Won primary |
| Julie Fedorchak (R) source | Open seat | U.S. House North Dakota At-large District | Primary | |
| Michael Turner (R) source | Incumbent | U.S. House Ohio District 10 | Primary, General | Won primary |
| Troy Balderson (R) source | Incumbent | U.S. House Ohio District 12 | Primary, General | Won primary |
| Mike Carey (R) source | Incumbent | U.S. House Ohio District 15 | Primary, General | Won primary |
| Jim Jordan (R) source | Incumbent | U.S. House Ohio District 4 | Primary, General | Won primary |
| Bob Latta (R) source | Incumbent | U.S. House Ohio District 5 | Primary, General | Won primary |
| Max Miller (R) source | Incumbent | U.S. House Ohio District 7 | Primary, General | Won primary |
| Derek Merrin (R) source | Challenger | U.S. House Ohio District 9 | Primary, General | Won primary |
| Kevin Hern (R) source | Incumbent | U.S. House Oklahoma District 1 | Primary | |
| Josh Brecheen (R) source | Incumbent | U.S. House Oklahoma District 2 | Primary, General | Won primary |
| Frank Lucas (R) source | Incumbent | U.S. House Oklahoma District 3 | Primary | |
| Tom Cole (R) source | Incumbent | U.S. House Oklahoma District 4 | Primary | |
| Stephanie Bice (R) source | Incumbent | U.S. House Oklahoma District 5 | Primary, General | Won primary |
| Scott Perry (R) source | Incumbent | U.S. House Pennsylvania District 10 | Primary, General | Won primary |
| Lloyd Smucker (R) source | Incumbent | U.S. House Pennsylvania District 11 | Primary, General | Won primary |
| John Joyce (R) source | Incumbent | U.S. House Pennsylvania District 13 | Primary, General | Won primary |
| Guy Reschenthaler (R) source | Incumbent | U.S. House Pennsylvania District 14 | Primary, General | Won primary |
| Glenn Thompson (R) source | Incumbent | U.S. House Pennsylvania District 15 | Primary, General | Won primary |
| Mike Kelly (R) source | Incumbent | U.S. House Pennsylvania District 16 | Primary, General | Won primary |
| Rob Bresnahan Jr. (R) source | Challenger | U.S. House Pennsylvania District 8 | Primary, General | Won primary |
| Dan Meuser (R) source | Incumbent | U.S. House Pennsylvania District 9 | Primary, General | Won primary |
| Nancy Mace (R) source | Incumbent | U.S. House South Carolina District 1 | Primary | |
| Joe Wilson (R) source | Incumbent | U.S. House South Carolina District 2 | Primary | |
| Mark Burns (R) source | Open seat | U.S. House South Carolina District 3 | Primary | |
| William Timmons (R) source | Incumbent | U.S. House South Carolina District 4 | Primary | |
| Russell Fry (R) source | Incumbent | U.S. House South Carolina District 7 | Primary, General | Won primary |
| Diana Harshbarger (R) source | Incumbent | U.S. House Tennessee District 1 | Primary | |
| Charles J. Fleischmann (R) source | Incumbent | U.S. House Tennessee District 3 | Primary | |
| Scott DesJarlais (R) source | Incumbent | U.S. House Tennessee District 4 | Primary | |
| Andy Ogles (R) source | Incumbent | U.S. House Tennessee District 5 | Primary | |
| John Rose (R) source | Incumbent | U.S. House Tennessee District 6 | Primary | |
| Mark Green (R) source | Incumbent | U.S. House Tennessee District 7 | Primary | |
| David Kustoff (R) source | Incumbent | U.S. House Tennessee District 8 | Primary | |
| August Pfluger (R) source | Incumbent | U.S. House Texas District 11 | Primary, General | Won primary |
| Ronny L. Jackson (R) source | Incumbent | U.S. House Texas District 13 | Primary, General | Won primary |
| Randy Weber (R) source | Incumbent | U.S. House Texas District 14 | Primary, General | Won primary |
| Monica De La Cruz (R) source | Incumbent | U.S. House Texas District 15 | Primary, General | Won primary |
| Pete Sessions (R) source | Incumbent | U.S. House Texas District 17 | Primary, General | Won primary |
| Jodey Arrington (R) source | Incumbent | U.S. House Texas District 19 | Primary, General | Won primary |
| Troy Nehls (R) source | Incumbent | U.S. House Texas District 22 | Primary, General | Won primary |
| Beth Van Duyne (R) source | Incumbent | U.S. House Texas District 24 | Primary, General | Won primary |
| Roger Williams (R) source | Incumbent | U.S. House Texas District 25 | Primary, General | Won primary |
| Brandon Gill (R) source | Open seat | U.S. House Texas District 26 | Primary, General | Won primary |
| Keith Self (R) source | Incumbent | U.S. House Texas District 3 | Primary, General | Won primary |
| John Carter (R) source | Incumbent | U.S. House Texas District 31 | Primary, General | Won primary |
| Mayra Flores (R) source | Challenger | U.S. House Texas District 34 | Primary, General | Won primary |
| Brian Babin (R) source | Incumbent | U.S. House Texas District 36 | Primary, General | Won primary |
| Wesley Hunt (R) source | Incumbent | U.S. House Texas District 38 | Primary, General | Won primary |
| Pat Fallon (R) source | Incumbent | U.S. House Texas District 4 | Primary, General | Won primary |
| Lance Gooden (R) source | Incumbent | U.S. House Texas District 5 | Primary, General | Won primary |
| Burgess Owens (R) source | Incumbent | U.S. House Utah District 4 | Primary, General | Won primary |
| Robert J. Wittman (R) source | Incumbent | U.S. House Virginia District 1 | Primary, General | Won primary |
| Jennifer Kiggans (R) source | Incumbent | U.S. House Virginia District 2 | Primary, General | Won primary |
| John McGuire (R) source | Challenger | U.S. House Virginia District 5 | Primary | |
| Benjamin Lee Cline (R) source | Incumbent | U.S. House Virginia District 6 | Primary, General | Won primary |
| H. Morgan Griffith (R) source | Incumbent | U.S. House Virginia District 9 | Primary, General | Won primary |
| Jerrod Sessler (R) source | Challenger | U.S. House Washington District 4 | Primary | |
| Derrick Van Orden (R) source | Incumbent | U.S. House Wisconsin District 3 | Primary | |
| Scott Fitzgerald (R) source | Incumbent | U.S. House Wisconsin District 5 | Primary | |
| Tom Tiffany (R) source | Incumbent | U.S. House Wisconsin District 7 | Primary | |
| Tony Wied (R) source | Open seat | U.S. House Wisconsin District 8 | Primary | |
| Harriet Hageman (R) source | Incumbent | U.S. House Wyoming At-large District | Primary |