2024 California House Election Interactive Map

All US House seats to be contested in 2024

For the first time in its history, California lost a congressional district in the most recent Census. However, its 52 districts are still the most in the nation. 2022 saw the GOP gain two seats, while Democrats lost one. Democrats continue to dominate the delegation, holding a 40-12 edge.

Five districts (13, 22, 27, 40, 45) are among just 18 Biden-GOP districts nationwide. These are districts represented by a Republican, but which the president won in 2020. With 2024 another presidential year, these seats are likely to be highly competitive. 

At the other extreme, six districts in 2022 saw two Democrats on the ballot. This is possible because of the state's top-two system, where all candidates from all parties compete on a primary ballot, with the top two finishers advancing to the general election.

To create and share your own forecast, visit the 2024 House Interactive Map.

District Incumbent Party Since Term Predictions Margin of Victory
Consensus Map House(a) President(b)
CA- 13 John Duarte
2023 1st
0.4% 10.9%
Adam Gray
John Duarte*
CA- 22 David Valadao
2021 2nd
3.0% 12.9%
Rudy Salas
David Valadao*
CA- 27 Mike Garcia
2020 3rd
6.4% 12.4%
George Whitesides
Mike Garcia*
CA- 41 Ken Calvert
1993 16th
4.6% 1.1%
Will Rollins
Ken Calvert*
CA- 45 Michelle Steel
2021 2nd
4.8% 6.2%
Derek Tran
Michelle Steel*
CA- 47 Katie Porter
2019 3rd
3.4% 11.1%
Retiring to run for U.S. Senate
Dave Min
Scott Baugh

(a) Source: 270toWin research.
Aside from these exceptions, the margin is the difference between the Democratic and Republican nominee in the 2022 general election.
Exception types: * Uncontested | + No major party opposition | ^ Both nominees from same party | x All-party primary | y Ranked choice tabulation

(b) Source: Daily Kos. The margin is the difference between Joe Biden and Donald Trump in the 2020 presidential election, based on congressional district boundaries in use for the 2024 election. Where there has been redistricting, the 2022 boundaries are used in the Current House tab.