2018 United States House of Representatives elections

Results summary and analysis

Retirements

Democrats

1. : Kyrsten Sinema retired to run for U.S. Senator.
2. : Jared Polis retired to run for Governor of Colorado.
3. : Elizabeth Esty retired after involvement in sexual harassment allegations against an employee.
4. : Colleen Hanabusa retired to run for Governor of Hawaii.
5. : Luis Gutiérrez retired.
6. : John Delaney retired to run for U.S. President.
7. : Niki Tsongas retired.
8. : Sander Levin retired.
9. : Tim Walz retired to run for Governor of Minnesota.
10. : Keith Ellison retired to run for Minnesota Attorney General.
11. : Rick Nolan retired.
12. : Jacky Rosen retired to run for U.S. Senator.
13. : Rubén Kihuen retired due to sexual harassment allegations.
14. : Carol Shea-Porter retired.
15. : Michelle Lujan Grisham retired to run for Governor of New Mexico.
16. : Bob Brady: retired after being redistricted from the 1st district.
17. : Beto O'Rourke retired to run for U.S. Senator.
18. : Gene Green retired.

    Republicans

1. : Martha McSally retired to run for U.S. Senator.
2. : Ed Royce retired.
3. : Darrell Issa retired.
4. : Ron DeSantis resigned to run for Governor of Florida.
5. : Dennis Ross retired.
6. : Tom Rooney retired.
7. : Ileana Ros-Lehtinen retired.
8. : Raúl Labrador retired to run for Governor of Idaho.
9. : Todd Rokita retired to run for U.S. Senator.
10. : Luke Messer retired to run for U.S. Senator.
11. : Lynn Jenkins retired.
12. : Dave Trott retired.
13. : Gregg Harper retired.
14. : Frank LoBiondo retired "due to the increased political polarization of Congress."
15. : Rodney Frelinghuysen retired.
16. : Steve Pearce retired to run for Governor of New Mexico.
17. : Kevin Cramer retired to run for U.S. Senator.
18. : Jim Renacci retired to run for U.S. Senator.
19. : Jim Bridenstine announced his retirement November 10, 2017. He resigned April 23, 2018, after being confirmed as Administrator of NASA; his replacement was seated November 6, 2018.
20. : Ryan Costello retired due to "family, the political environment and redistricting."
21. : Lou Barletta, redistricted from the 11th district, retired to run for U.S. Senator.
22. : Bill Shuster retired when redistricted from the 9th district.
23. : Trey Gowdy retired to "return to the justice system."
24. : Kristi Noem retired to run for Governor of South Dakota.
25. : Jimmy Duncan retired.
26. : Diane Black retired to run for Governor of Tennessee.
27. : Marsha Blackburn retired to run for U.S. Senator.
28. : Ted Poe retired.
29. : Sam Johnson retired.
30. : Jeb Hensarling retired.
31. : Joe Barton retired.
32. : Lamar Smith retired.
33. : Tom Garrett retired due to alcoholism.
34. : Bob Goodlatte retired.
35. : Dave Reichert retired.
36. : Evan Jenkins retired to run for U.S. Senator and then resigned to become State Supreme Court Justice.
37. : Paul Ryan retired.

    Resignations and death

Democrats

1. : John Conyers resigned and Brenda Jones won only the special election to complete Conyers's term.
2. : Louise Slaughter died.

   Republicans

1. : Pat Meehan resigned when redistricted from the 7th district.
2. : Charlie Dent resigned when redistricted from the 15th district.

   Incumbents defeated

In primary elections

Democrats

1. : Delegate Madeleine Bordallo lost renomination to Michael San Nicolas, who then won the general election.
2. : Mike Capuano lost renomination to Ayanna Pressley, who then won the general election.
3. : Joe Crowley lost renomination to Alexandria Ocasio-Cortez, who then won the general election.

   Republicans

1. : Robert Pittenger lost renomination to Mark Harris. A new election was ordered due to electoral fraud conducted by associates of Republican Harris's campaign.
2. : Mark Sanford lost renomination to Katie Arrington, who then lost the general election to Joe Cunningham.

   In the general election

Democrats

Republicans

1. : Jeff Denham lost to Josh Harder.
2. : David Valadao lost to TJ Cox.
3. : Steve Knight lost to Katie Hill.
4. : Mimi Walters lost to Katie Porter.
5. : Dana Rohrabacher lost to Harley Rouda.
6. : Mike Coffman lost to Jason Crow.
7. : Carlos Curbelo lost to Debbie Mucarsel-Powell.
8. : Karen Handel lost to Lucy McBath.
9. : Peter Roskam lost to Sean Casten.
10. : Randy Hultgren lost to Lauren Underwood.
11. : Rod Blum lost to Abby Finkenauer.
12. : David Young lost to Cindy Axne.
13. : Kevin Yoder lost to Sharice Davids.
14. : Bruce Poliquin lost to Jared Golden.
15. : Mike Bishop lost to Elissa Slotkin.
16. : Jason Lewis lost to Angie Craig.
17. : Erik Paulsen lost to Dean Phillips.
18. : Tom MacArthur lost to Andy Kim.
19. : Leonard Lance lost to Tom Malinowski.
20. : Dan Donovan lost to Max Rose.
21. : John Faso lost to Antonio Delgado.
22. : Claudia Tenney lost to Anthony Brindisi.
23. : Steve Russell lost to Kendra Horn.
24. : Keith Rothfus lost a redistricting race to Conor Lamb.
25. : John Culberson lost to Lizzie Pannill Fletcher.
26. : Pete Sessions lost to Colin Allred.
27. : Mia Love lost to Ben McAdams.
28. : Scott Taylor lost to Elaine Luria.
29. : Dave Brat lost to Abigail Spanberger.
30. : Barbara Comstock lost to Jennifer Wexton.

    Open seats that changed parties

Democratic seats won by Republicans

1. : Won by Jim Hagedorn.
2. : Won by Pete Stauber.
3. : Conor Lamb instead ran in the 17th district. Won by Guy Reschenthaler.

   Republican seats won by Democrats

1. : Won by Ann Kirkpatrick.
2. : Won by Gil Cisneros.
3. : Won by Mike Levin.
4. : Won by Donna Shalala.
5. : Won by Haley Stevens.
6. : Won by Jeff Van Drew, who became a Republican on December 19, 2019.
7. : Won by Mikie Sherrill.
8. : Won by Xochitl Torres Small.
9. : Won by Mary Gay Scanlon.
10. : Won by Chrissy Houlahan.
11. : Won by Susan Wild.
12. : Won by Joe Cunningham.
13. : Won by Kim Schrier.

    Open seats that parties held

Democratic seats held by Democrats

1. : Won by Greg Stanton.
2. : Won by Joe Neguse.
3. : Won by Jahana Hayes.
4. : Won by Ed Case.
5. : Won by Chuy García.
6. : Won by David Trone.
7. : Won by Lori Trahan.
8. : Won by Andy Levin.
9. : Won by Rashida Tlaib.
10. : Won by Ilhan Omar.
11. : Won by Susie Lee.
12. : Won by Steven Horsford.
13. : Won by Chris Pappas.
14. : Won by Deb Haaland.
15. : Won by Joe Morelle.
16. : Bob Brady retired. Won By Brendan Boyle.
17. : Brendan Boyle ran in. Won by Madeleine Dean.
18. : Won by Veronica Escobar.
19. : Won by Sylvia Garcia.

    Republican seats held by Republicans

1. : Won by Michael Waltz.
2. : Won by Ross Spano.
3. : Won by Greg Steube.
4. : Won by Russ Fulcher.
5. : Won by Jim Baird.
6. : Won by Greg Pence.
7. : Won by Steve Watkins.
8. : Won by Michael Guest.
9. : Won by Kelly Armstrong.
10. : Won by Anthony Gonzalez.
11. : Won by Kevin Hern.
12. : Won by Dan Meuser.
13. : Won by John Joyce.
14. : Won by William Timmons.
15. : Won by Dusty Johnson.
16. : Won by Tim Burchett.
17. : Won by John Rose.
18. : Won by Mark Green.
19. : Won by Dan Crenshaw.
20. : Won by Van Taylor.
21. : Won by Lance Gooden.
22. : Won by Ron Wright.
23. : Won by Chip Roy.
24. : Won by Denver Riggleman.
25. : Won by Ben Cline.
26. : Won by Carol Miller.
27. : Won by Bryan Steil.

    Resignations

1. : Blake Farenthold announced his retirement December 14, 2017. He resigned April 6, 2018. His seat was filled by a special election for the remainder of the term.
2. : Jason Chaffetz announced his retirement April 19, 2017. He resigned June 30, 2017. His seat was filled by a special election for the remainder of the term.
3. : Evan Jenkins announced his retirement May 8, 2017 to run for U.S. Senator. He lost the nomination and then resigned September 30, 2018, when appointed to the Supreme Court of Appeals of West Virginia. His seat not filled until the regular election for the next congress.

   Close races

Election ratings

Special elections

Voter demographics

Election dates

Alabama

Alaska

Arizona

Arkansas

California

Colorado

Connecticut

Delaware

Florida

Georgia

Hawaii

Idaho

Illinois

Indiana

Iowa

Kansas

Kentucky

Louisiana

Maine

Maryland

Massachusetts

Michigan

Minnesota

Mississippi

Missouri

Montana

Nebraska

Nevada

New Hampshire

New Jersey

New Mexico

New York

North Carolina

North Dakota

Ohio

Oklahoma

Oregon

Pennsylvania

Rhode Island

South Carolina

South Dakota

Tennessee

Texas

Utah

Vermont

Virginia

Washington

West Virginia

Wisconsin

Wyoming

Non-voting delegates

American Samoa

District of Columbia

Guam

Northern Mariana Islands

Puerto Rico

United States Virgin Islands