House districts / California
California's 4th congressional district
CA-4. Redrawn for 2026: the November 2026 election is on new lines. The outline shows the 2024 district with the same number.
Fundraising
- Eric Jones Das of Oct 14, 2026Raised $18.1mSpent $16.5m · Cash $1.5m
- Mike Thompson Das of Oct 14, 2026Raised $5.5mSpent $5.3m · Cash $1.4m
7 other 2026 candidates filed reports (primary candidates). 2 other candidates have not filed.
Federal Election Commission, candidate totals, public domain.
President in this district
PollCheck calculation from precinct returns on the 2026 lines (method).
| Year | Democrat | Republican | Other | Margin | 2024 lines |
|---|---|---|---|---|---|
| 2024 | Harris 55.8% | Trump 41.2% | 3.0% | D+14.6 | D+31.2 |
| 2020 | Biden 59.4% | Trump 38.3% | 2.4% | D+21.1 | D+36.6 |
| 2016 | Clinton 56.7% | Trump 36.6% | 6.7% | D+20.1 | D+34.4 |
Who lives here
| Measure | This district | US |
|---|---|---|
| People | ||
| Population | 758,116 | |
| Adults (18+) | 591,002 | |
| Citizens, % of adults* | 89.4% | 92.1% |
| Age, % of adults | ||
| 18 to 29* | 22.8% | 20.3% |
| 30 to 44* | 24.5% | 25.9% |
| 45 to 64* | 29.9% | 31.8% |
| 65 and over* | 22.9% | 22.0% |
| Race and Hispanic origin, % of residents | ||
| White | 50.6% | 57.8% |
| Black | 2.1% | 12.1% |
| Hispanic | 31.1% | 18.7% |
| Asian | 9.3% | 5.9% |
| Other or more than one | 6.7% | 5.5% |
| Education and income | ||
| Bachelor's degree or higher, % of 25+* | 33.5% | 35.7% |
| Median household income* | $95,694 | $80,734 |
* Estimated for the 2026 lines from census blocks (ACS 2020-2024). Population, adults and race: 2020 Census, counted on the 2026 lines. The tick marks the US figure.
Winning margin
Results since 1976
| Year | Winner | Share | Runner-up | Share | Margin |
|---|---|---|---|---|---|
| 2024 lines, elections 2022-2024: redrawn for 2026 seat count changed from 53 to 52 after the census | |||||
| 2024 | Mike Thompson Democrat | 66.5% | John Munn Republican | 33.5% | D+32.9 |
| 2022 | Mike Thompson Democrat | 67.8% | Matt Brock Republican | 32.2% | D+35.6 |
| Earlier lines, elections 2012-2020 post-census redistricting | |||||
| 2020 | Tom McClintock Republican | 56.0% | Brynne S. Kennedy Democrat | 44.0% | R+11.9 |
| 2018 | Tom McClintock Republican | 54.1% | Jessica Morse Democrat | 45.9% | R+8.3 |
| 2016 | Tom McClintock Republican | 62.7% | Robert W. Derlet Democrat | 37.3% | R+25.4 |
| 2014 | Tom McClintock Republican | 60.0% | Arthur "Art" Moore Republican | 40.0% | R+20.1 |
| 2012 | Tom McClintock Republican | 61.1% | Jack Uppal Democrat | 38.9% | R+22.2 |
| Earlier lines, elections 2002-2010 seat count changed from 52 to 53 after the census | |||||
| 2010 | Tom McClintock Republican | 61.3% | Clint Curtis Democrat others 7.3% | 31.4% | R+29.8 |
| 2008 | Tom McClintock Republican | 50.2% | Charlie Brown Democrat | 49.8% | R+0.5 |
| 2006 | John T. Doolittle Republican | 49.0% | Charlie Brown Democrat others 5.1% | 45.9% | R+3.2 |
| 2004 | John T. Doolittle Republican | 65.4% | David I. Winters Democrat | 34.6% | R+30.8 |
| 2002 | John T. Doolittle Republican | 64.8% | Mark A. Norberg Democrat others 3.4% | 31.9% | R+32.9 |
| Earlier lines, elections 1992-2000 seat count changed from 45 to 52 after the census | |||||
| 2000 | John T. Doolittle Republican | 63.4% | Mark A. Norberg Democrat others 5.1% | 31.5% | R+32.0 |
| 1998 | John T. Doolittle Republican | 62.6% | David Shapiro Democrat others 3.0% | 34.4% | R+28.2 |
| 1996 | John T. Doolittle Republican | 60.5% | Katie Hirning Democrat others 3.4% | 36.1% | R+24.4 |
| 1994 | John T. Doolittle Republican | 61.3% | Katie Hirning Democrat others 3.8% | 34.9% | R+26.4 |
| 1992 | John T. Doolittle Republican | 49.8% | Patricia Malberg Democrat others 4.5% | 45.7% | R+4.1 |
| Earlier lines, elections 1982-1990 seat count changed from 43 to 45 after the census | |||||
| 1990 | Vic Fazio Democrat | 54.7% | Mark Baughman Republican others 6.0% | 39.3% | D+15.4 |
| 1988 | Vic Fazio Democrat | 99.3% | others 0.7% | D+98.6 | |
| 1986 | Vic Fazio Democrat | 70.2% | Jack D. Hite Republican | 29.8% | D+40.3 |
| 1984 | Vic Fazio Democrat | 61.4% | Roger Canfield Republican others 1.9% | 36.7% | D+24.7 |
| 1982 | Vic Fazio Democrat | 63.9% | Roger B. Canfield Republican | 36.1% | D+27.7 |
| Earlier lines, elections 1976-1980 | |||||
| 1980 | Vic Fazio Democrat | 65.3% | Albert Dehr Republican others 5.0% | 29.7% | D+35.6 |
| 1978 | Vic Fazio Democrat | 55.4% | Rex Hime Republican | 44.6% | D+10.7 |
| 1976 | Robert L. Leggett Democrat | 50.2% | Albert Dehr Republican | 49.8% | D+0.4 |
More on California
Other California districts
About these results
Shares count all candidate votes, including write-ins, with a candidate's votes on several party lines added together. Each result is on the lines in force at the time. Mid-decade redraws before 2016 may be unmarked.
President in this district: 2016 and 2020, and 2024 on the new lines, are estimates: precinct votes are split between districts by census block. The last column is the margin in CA-4 on the 2024 lines.
Counties only partly inside the district show the 2024 result for that part; estimates are labelled.
Margin chart: winner minus runner-up. Gaps are unopposed races; dashed lines are new district lines.
Who lives here (2026 lines) is estimated from Census survey figures split by population.
Sources
Results: MIT Election Data and Science Lab, U.S. House 1976-2016 (doi:10.7910/DVN/IG0UN2, CC0; via MEDSL/constituency-returns), and Clerk of the US House, Statistics of the Presidential and Congressional Election 2018-2024 (public domain).
Presidential results: PollCheck calculation from MIT Election Data and Science Lab 2024 precinct returns (doi:10.7910/DVN/XDJYKC, doi:10.7910/DVN/USBYR4, CC0; state totals doi:10.7910/DVN/42MVDX, CC0) and Voting and Election Science Team 2016 and 2020 precinct results and shapes (doi:10.7910/DVN/NH5S2I, doi:10.7910/DVN/K7760H, CC BY 4.0), with US Census Bureau 2020 block populations and block equivalency files (public domain). Official figures: Texas Legislative Council (2024 on the 2026 lines); Louisiana, New Jersey, California and Washington election offices (county totals). Certified results transcribed by Wikipedia (CC BY-SA 4.0): Maine 2024 by district: 2024 United States presidential election in Maine (revision 1382530995); Indiana county totals: 2024 United States presidential election in Indiana (revision 1382505975); Oregon county totals: 2024 United States presidential election in Oregon (revision 1382605746).
District lines: US Census Bureau TIGER/Line 2026 (120th Congress) and 2025 cartographic boundary files (119th Congress), public domain.
Members: unitedstates/congress-legislators (CC0).
Counties: US Census Bureau 2024 cartographic boundary file (public domain); 2024 county results summed from the same MEDSL precinct returns, with the official county totals above.
Demographics: US Census Bureau, American Community Survey 5-year estimates 2020-2024; 2020 Census P.L. 94-171 (public domain).
2028 candidates: Federal Election Commission (public domain).
Photos: official portraits, public domain (US government); see Photo credits.
PollCheck US. Data through November 5, 2026. Photo credits