House districts / California
California's 45th congressional district
CA-45. Redrawn for 2026: the November 2026 election is on new lines. The outline shows the 2024 district with the same number.
Fundraising
- Derek Tran Das of Oct 14, 2026Raised $6.0mSpent $3.6m · Cash $2.7m
- Chuong Vo Ras of Oct 14, 2026Raised $937kSpent $762k · Cash $175k
6 other 2026 candidates filed reports (primary candidates).
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 50.6% | Trump 46.5% | 2.9% | D+4.0 | D+1.5 |
| 2020 | Biden 54.1% | Trump 44.0% | 1.9% | D+10.1 | D+6.2 |
| 2016 | Clinton 57.9% | Trump 36.7% | 5.5% | D+21.2 | D+13.3 |
Who lives here
| Measure | This district | US |
|---|---|---|
| People | ||
| Population | 758,321 | |
| Adults (18+) | 603,306 | |
| Citizens, % of adults* | 84.1% | 92.1% |
| Age, % of adults | ||
| 18 to 29* | 19.7% | 20.3% |
| 30 to 44* | 24.4% | 25.9% |
| 45 to 64* | 34.3% | 31.8% |
| 65 and over* | 21.7% | 22.0% |
| Race and Hispanic origin, % of residents | ||
| White | 20.0% | 57.8% |
| Black | 2.4% | 12.1% |
| Hispanic | 34.6% | 18.7% |
| Asian | 39.2% | 5.9% |
| Other or more than one | 3.8% | 5.5% |
| Education and income | ||
| Bachelor's degree or higher, % of 25+* | 34.6% | 35.7% |
| Median household income* | $102,874 | $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 | Derek Tran Democrat | 50.1% | Michelle Steel Republican | 49.9% | D+0.2 |
| 2022 | Michelle Steel Republican | 52.4% | Jay F. Chen Democrat | 47.6% | R+4.8 |
| Earlier lines, elections 2012-2020 post-census redistricting | |||||
| 2020 | Katie Porter Democrat | 53.5% | Greg Raths Republican | 46.5% | D+6.9 |
| 2018 | Katie Porter Democrat | 52.0% | Mimi Walters Republican | 48.0% | D+4.1 |
| 2016 | Mimi Walters Republican | 58.6% | Ron Varasteh Democrat | 41.4% | R+17.1 |
| 2014 | Mimi Walters Republican | 65.1% | Drew E. Leavens Democrat | 34.9% | R+30.2 |
| 2012 | John Campbell Republican | 58.5% | Sukhee Kang Democrat | 41.5% | R+16.9 |
| Earlier lines, elections 2002-2010 seat count changed from 52 to 53 after the census | |||||
| 2010 | Mary Bono Mack Republican | 51.5% | Steve Pougnet Democrat others 6.4% | 42.1% | R+9.3 |
| 2008 | Mary Bono Mack Republican | 58.3% | Julie Bornstein Democrat | 41.7% | R+16.6 |
| 2006 | Mary Bono Republican | 60.7% | David Roth Democrat | 39.3% | R+21.3 |
| 2004 | Mary Bono Republican | 66.6% | Richard J. Meyer Democrat | 33.4% | R+33.2 |
| 2002 | Mary Bono Republican | 65.2% | Elle K. Kurpiewski Democrat others 2.0% | 32.7% | R+32.5 |
| Earlier lines, elections 1992-2000 seat count changed from 45 to 52 after the census | |||||
| 2000 | Dana Rohrabacher Republican | 62.1% | Ted Crisell Democrat others 5.5% | 32.4% | R+29.7 |
| 1998 | Dana Rohrabacher Republican | 58.6% | Patricia W. Neal Democrat others 4.0% | 37.3% | R+21.3 |
| 1996 | Dana Rohrabacher Republican | 61.0% | Sally J. Alexander Democrat others 5.8% | 33.2% | R+27.7 |
| 1994 | Dana Rohrabacher Republican | 69.1% | Brett Williamson Democrat | 30.9% | R+38.2 |
| 1992 | Dana Rohrabacher Republican | 54.5% | Patricia McCabe Democrat others 6.5% | 39.0% | R+15.5 |
| Earlier lines, elections 1982-1990 seat count changed from 43 to 45 after the census | |||||
| 1990 | Duncan Hunter Republican | 72.8% | Joe Shea Libertarian | 27.1% | R+45.7 |
| 1988 | Duncan Hunter Republican | 74.0% | Pete Lepiscopo Democrat others 2.0% | 24.0% | R+50.0 |
| 1986 | Duncan Hunter Republican | 76.9% | Hewitt Fitts Ryan Democrat others 1.9% | 21.2% | R+55.7 |
| 1984 | Duncan Hunter Republican | 75.1% | David W. Guthrie Democrat others 2.0% | 22.9% | R+52.3 |
| 1982 | Duncan Hunter Republican | 68.6% | Richard Hill Democrat others 2.2% | 29.2% | R+39.4 |
| CA-45 did not exist before 1982: California had 43 districts in 1976-1980. | |||||
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-45 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