- Lead
- 54,156
- Total
- 193,904
- vs nation
- D+29.4
California 10th State House District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 82,327
- Total
- 217,129
- vs nation
- D+33.5
- Lead
- 66,797
- Total
- 164,808
- vs nation
- D+38.4
- Lead
- 55,256
- Total
- 151,668
- vs nation
- D+32.6
- Lead
- 57,932
- Total
- 158,835
- vs nation
- D+29.2
- Lead
- 25,998
- Total
- 135,197
- vs nation
- D+21.7
- Lead
- 27,300
- Total
- 122,135
- vs nation
- D+21.8
- Lead
- 30,619
- Total
- 115,994
- vs nation
- D+17.9
Key facts
- 2024 presidential margin
- D+27.9MIT Election Lab
- Population
- 516,0572024 5-year
- Population density
- 4,472 / sq mi2024 5-year · TIGER/Line
- Land area
- 115 sq miTIGER/Line
- Median household income
- $93,8042024 5-year
- White (non-Hispanic)
- 22.4%2024 5-year
- Black
- 12.4%2024 5-year
- Hispanic / Latino
- 26.6%2024 5-year
- Peak Democratic margin
- D+71.0 in 1936MIT Election Lab
- Peak Republican margin
- R+26.7 in 1924MIT Election Lab
- Most similar
- Assembly District 49, CA · twin score 95.6
presidential history
Party record book
California 10th State House District · the strongest Democratic and Republican presidential performances recorded here, measured three ways.
1892–2024 (partial returns from 1876) · 38 presidential cycles · 38 with a vote-share denominator · 34 with a national benchmark
Highest vote share
Largest share of the presidential candidate vote cast here.
Democratic
Franklin D. Roosevelt1936
85.1%
15,983 votes · D+71.0 · modeled estimate
Runner-up · Franklin D. Roosevelt, 1932 · 77.9%
Republican
Warren G. Harding1920
54.9%
3,546 votes · R+14.3 · modeled estimate
Runner-up · Theodore Roosevelt, 1904 · 54.9%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
147,359votes
67.9% of the vote · D+37.9 · modeled estimate
Runner-up · Kamala Harris, 2024 · 120,633 votes
Republican
Donald Trump2024
66,477votes
34.3% of the vote · D+27.9 · modeled estimate
Runner-up · Donald Trump, 2020 · 65,032 votes
Best relative to the U.S.
This Place’s margin against the national margin in the same election — positive when it leaned toward the party more than the country did.
Democratic
Franklin D. Roosevelt1936
+46.7pts D vs U.S.
Place D+71.0 · U.S. D+24.3 · modeled estimate
Runner-up · Woodrow Wilson, 1912 · +46.2 pts
Republican
Calvin Coolidge1924
+1.5pts R vs U.S.
Place R+26.7 · U.S. R+25.2 · a third-party candidate carried the Place · modeled estimate
Runner-up · Theodore Roosevelt, 1904 · −1.3 pts
Current officeholders
State legislative officeholder from OpenStates nightly current-legislator data.
Senate and governor results are in the Office selector at the top of this page.
U.S. House
Each row is a county-allocated estimate of U.S. House votes for this district — county returns apportioned onto its boundary, not precinct-counted. “Vote lead” is the estimated local lead here, not necessarily the winner of the full contest.
Anchored in the beach cities and westside neighborhoods of Los Angeles County, this district combines high-income homeowners with dense apartment renters, producing some of the most lopsided presidential margins in Southern California.
Across the recorded series it reached a Democratic high of 71.0 points in 1936 and a Republican high of 26.7 points in 1924. Between 2020 and 2024 the district moved 10.0 points toward the Republican candidate; the 2024 margin was 27.9 points.
A population of 516,057, a 22% non-Hispanic-white share, and a median household income of $93,804 describe the district. The district's voting pattern over the last decade is most similar to that of Assembly District 49 and Assembly District 20.
The state-house districts whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.
Twin score (0–100) = weighted cosine between tier-standardized fingerprints: presidential margins 2000–2024 with 12-yr trend and elasticity, ACS income, age, education, population and race, top reported ancestries, and religious adherence — chips name the closest-shared dimensions and the widest gap. Re-weight the groups in the twins explorer.
District research tools
Open the source-auditable district brief for electoral baseline, electorate, current-cycle coverage, geography, official dates, and methodology. Open campaign intelligence report → · Browse all comparisons →
California 10th State House District. Akashic. https://akashic.app/sld-lower/06010/. Accessed May 20, 2026. License: CC BY 4.0.