- Lead
- 47,339
- Total
- 203,005
- vs nation
- R+21.8
California 9th State House District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 30,048
- Total
- 210,507
- vs nation
- R+18.7
- Lead
- 25,649
- Total
- 166,295
- vs nation
- R+17.5
- Lead
- 26,050
- Total
- 151,704
- vs nation
- R+21.0
- Lead
- 30,064
- Total
- 158,111
- vs nation
- R+26.3
- Lead
- 54,406
- Total
- 150,055
- vs nation
- R+33.8
- Lead
- 38,244
- Total
- 129,393
- vs nation
- R+30.1
- Lead
- 26,808
- Total
- 114,146
- vs nation
- R+32.0
Key facts
- 2024 presidential margin
- R+23.3MIT Election Lab
- Population
- 477,4392024 5-year
- Population density
- 206 / sq mi2024 5-year · TIGER/Line
- Land area
- 2,322 sq miTIGER/Line
- Median household income
- $95,6922024 5-year
- White (non-Hispanic)
- 45.0%2024 5-year
- Black
- 2.8%2024 5-year
- Hispanic / Latino
- 38.6%2024 5-year
- Peak Democratic margin
- D+49.7 in 1912MIT Election Lab
- Peak Republican margin
- R+53.5 in 1920MIT Election Lab
- Most similar
- Assembly District 63, CA · twin score 95.0
presidential history
Party record book
California 9th 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
59.7%
14,138 votes · D+20.5 · modeled estimate
Runner-up · Franklin D. Roosevelt, 1932 · 50.7%
Republican
Theodore Roosevelt1904
73.4%
4,269 votes · R+52.5 · modeled estimate
Runner-up · Warren G. Harding, 1920 · 73.1%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
87,963votes
41.8% of the vote · R+14.3 · modeled estimate
Runner-up · Kamala Harris, 2024 · 75,270 votes
Republican
Donald Trump2024
122,609votes
60.4% of the vote · R+23.3 · modeled estimate
Runner-up · Donald Trump, 2020 · 118,011 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
Woodrow Wilson1912
+30.1pts D vs U.S.
Place D+49.7 · U.S. D+19.5 · modeled estimate
Runner-up · Franklin D. Roosevelt, 1936 · −3.7 pts
Republican
George W. Bush2004
+33.8pts R vs U.S.
Place R+36.3 · U.S. R+2.5 · modeled estimate
Runner-up · Theodore Roosevelt, 1904 · +32.9 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.
Assembly District 9 recorded an R+23.3 presidential margin in 2024, making it a consistent outlier in a state that leans heavily Democratic statewide. Its rural Central Valley geography anchors a voter profile distinct from California's coastal and urban centers.
Across the recorded series it reached a Democratic high of 49.7 points in 1912 and a Republican high of 53.5 points in 1920. Between 2020 and 2024 the district moved 9.0 points toward the Republican candidate; the 2024 margin was 23.3 points.
A population of 477,439, a 45% non-Hispanic-white share, and a median household income of $95,692 describe the district. The district's voting pattern over the last decade is most similar to that of Assembly District 63 and Assembly District 8.
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 9th State House District. Akashic. https://akashic.app/sld-lower/06009/. Accessed May 20, 2026. License: CC BY 4.0.