House districts / California
California's 48th congressional district
CA-48. Redrawn for 2026: the November 2026 election is on new lines. The outline shows the 2024 district with the same number.
Fundraising
- Marni Von Wilpert Das of Oct 14, 2026Raised $5.0mSpent $4.3m · Cash $659k
- Jim Desmond Ras of Oct 14, 2026Raised $3.2mSpent $2.5m · Cash $718k
11 other 2026 candidates filed reports (primary candidates). 11 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 50.1% | Trump 47.2% | 2.7% | D+2.9 | R+15.3 |
| 2020 | Biden 52.5% | Trump 45.3% | 2.2% | D+7.3 | R+12.3 |
| 2016 | Clinton 46.9% | Trump 47.3% | 5.8% | R+0.3 | R+19.8 |
Who lives here
| Measure | This district | US |
|---|---|---|
| People | ||
| Population | 758,048 | |
| Adults (18+) | 580,265 | |
| Citizens, % of adults* | 88.4% | 92.1% |
| Age, % of adults | ||
| 18 to 29* | 18.6% | 20.3% |
| 30 to 44* | 27.5% | 25.9% |
| 45 to 64* | 31.8% | 31.8% |
| 65 and over* | 22.1% | 22.0% |
| Race and Hispanic origin, % of residents | ||
| White | 42.9% | 57.8% |
| Black | 3.8% | 12.1% |
| Hispanic | 40.1% | 18.7% |
| Asian | 7.0% | 5.9% |
| Other or more than one | 6.2% | 5.5% |
| Education and income | ||
| Bachelor's degree or higher, % of 25+* | 32.0% | 35.7% |
| Median household income* | $95,789 | $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 | Darrell Issa Republican | 59.3% | Stephen Houlahan Democrat | 40.7% | R+18.6 |
| 2022 | Darrell Issa Republican | 60.4% | Stephen Houlahan Democrat | 39.6% | R+20.7 |
| Earlier lines, elections 2012-2020 post-census redistricting | |||||
| 2020 | Michelle Steel Republican | 51.1% | Harley Rouda Democrat | 48.9% | R+2.1 |
| 2018 | Harley Rouda Democrat | 53.5% | Dana Rohrabacher Republican | 46.5% | D+7.1 |
| 2016 | Dana Rohrabacher Republican | 58.3% | Suzanne Savary Democrat | 41.7% | R+16.6 |
| 2014 | Dana Rohracher Republican | 64.1% | Suzanne Joyce Savary Democrat | 35.9% | R+28.2 |
| 2012 | Dana Rohrabacher Republican | 61.0% | Ron Varasteh Democrat | 39.0% | R+22.0 |
| Earlier lines, elections 2002-2010 seat count changed from 52 to 53 after the census | |||||
| 2010 | John Campbell Republican | 59.9% | Beth Krom Democrat others 3.6% | 36.5% | R+23.5 |
| 2008 | John Campbell Republican | 55.6% | Steve Young Democrat others 3.7% | 40.7% | R+14.9 |
| 2006 | John Campbell Republican | 59.9% | Steve Young Democrat others 2.9% | 37.2% | R+22.7 |
| 2004 | Christopher Cox Republican | 65.0% | John Graham Democrat others 2.9% | 32.1% | R+32.8 |
| 2002 | Christopher Cox Republican | 68.4% | John L. Graham Democrat others 3.1% | 28.4% | R+40.0 |
| Earlier lines, elections 1992-2000 seat count changed from 45 to 52 after the census | |||||
| 2000 | Darrell Issa Republican | 61.4% | Peter Kouvelis Democrat others 10.2% | 28.3% | R+33.1 |
| 1998 | Ron Packard Republican | 76.9% | Sharon K. Miles Natural law others 10.2% | 12.9% | R+64.0 |
| 1996 | Ron Packard Republican | 65.9% | Dan Farrell Democrat others 7.2% | 26.9% | R+39.0 |
| 1994 | Ron Packard Republican | 73.4% | Andrei Leschick Democrat others 4.4% | 22.2% | R+51.1 |
| 1992 | Ron Packard Republican | 61.1% | Michael Farber Democrat others 9.6% | 29.2% | R+31.9 |
| CA-48 did not exist before 1992: California had 43 districts in 1976-1980 and 45 in 1982-1990. | |||||
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-48 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