House districts / California


California's 23rd congressional district

CA-23. Redrawn for 2026: the November 2026 election is on new lines. The outline shows the 2024 district with the same number.

Jay Obernolte
Current member, elected on the 2024 lines
Jay Obernolte
Republican. In office since 2021.
2026 lines2024 lines

Fundraising

4 other 2026 candidates filed reports (primary candidates). 3 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).

YearDemocratRepublicanOtherMargin2024 lines
2024Harris 39.1%Trump 58.3%2.6%R+19.2R+16.8
2020Biden 42.8%Trump 54.9%2.3%R+12.1R+9.8
2016Clinton 39.0%Trump 55.4%5.6%R+16.4R+14.9

Who lives here

MeasureThis districtUS
People
Population
769,312
Adults (18+)
575,877
Citizens, % of adults*
91.2%
92.1%
Age, % of adults
18 to 29*
20.5%
20.3%
30 to 44*
28.6%
25.9%
45 to 64*
30.9%
31.8%
65 and over*
19.9%
22.0%
Race and Hispanic origin, % of residents
White
39.1%
57.8%
Black
8.3%
12.1%
Hispanic
43.0%
18.7%
Asian
3.9%
5.9%
Other or more than one
5.7%
5.5%
Education and income
Bachelor's degree or higher, % of 25+*
19.6%
35.7%
Median household income*
$74,153
$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

YearWinnerShare Runner-upShareMargin
2024 lines, elections 2022-2024: redrawn for 2026 seat count changed from 53 to 52 after the census
2024Jay Obernolte Republican60.1%Derek Marshall Democrat39.9%R+20.3
2022Jay Obernolte Republican61.0%Derek Marshall Democrat39.0%R+22.1
Earlier lines, elections 2012-2020 post-census redistricting
2020Kevin McCarthy Republican62.1%Kim Mangone Democrat37.9%R+24.3
2018Kevin McCarthy Republican63.7%Tatiana Matta Democrat36.3%R+27.4
2016Kevin McCarthy Republican69.2%Wendy Reed Democrat30.8%R+38.4
2014Kevin McCarthy Republican74.8%Raul Garcia Democrat25.2%R+49.7
2012Kevin McCarthy Republican73.2%Terry Phillips Other26.8%R+46.4
Earlier lines, elections 2002-2010 seat count changed from 52 to 53 after the census
2010Lois Capps Democrat57.8%Tom Watson Republican others 4.6%37.6%D+20.2
2008Lois Capps Democrat68.1%Matt T. Kokkonen Republican31.9%D+36.1
2006Lois Capps Democrat65.2%Victor D. Tognazzini Republican34.8%D+30.3
2004Lois Capps Democrat63.0%Don Regan Republican others 2.6%34.4%D+28.7
2002Lois Capps Democrat59.0%Beth Rogers Republican others 2.4%38.6%D+20.4
Earlier lines, elections 1992-2000 seat count changed from 45 to 52 after the census
2000Elton Gallegly Republican54.0%Michael Case Democrat others 5.3%40.7%R+13.4
1998Elton Gallegly Republican60.1%Daniel 'Dan' Gonzalez Democrat39.9%R+20.1
1996Elton Gallegly Republican59.6%Robert R. Unruhe Democrat others 5.3%35.1%R+24.5
1994Elton Gallegly Republican66.2%Kevin Ready Democrat others 6.4%27.5%R+38.7
1992Elton Gallegly Republican54.3%Anita Perez Ferguson Democrat others 4.3%41.4%R+12.8
Earlier lines, elections 1982-1990 seat count changed from 43 to 45 after the census
1990Anthony C. Beilenson Democrat61.7%Jim Salomon Republican others 4.1%34.2%D+27.6
1988Anthony C. Beilenson Democrat63.5%Jim Salomon Republican others 3.4%33.1%D+30.4
1986Anthony C. Beilenson Democrat65.8%George Woolverton Republican others 2.5%31.8%D+34.0
1984Anthony C. Beilenson Democrat61.6%Claude Parrish Republican others 1.6%36.9%D+24.7
1982Anthony C. Beilenson Democrat59.5%David Armor Republican40.5%D+19.1
Earlier lines, elections 1976-1980
1980Anthony C. Beilenson Democrat63.2%Robert (Bob) Winckler Republican others 5.3%31.5%D+31.7
1978Anthony C. Beilenson Democrat65.6%Joseph Barbara Republican34.4%D+31.3
1976Anthony C. Beilenson Democrat60.2%Thomas F. Bartman Republican39.8%D+20.4

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-23 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