California 4th 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
Joe Biden2020
66.6%
148,329 votes · D+35.6 · modeled estimate
Runner-up · Barack Obama, 2008 · 64.9%
Republican
Warren G. Harding1920
64.8%
11,074 votes · R+35.6 · modeled estimate
Runner-up · Dwight D. Eisenhower, 1952 · 59.1%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
148,329votes
66.6% of the vote · D+35.6 · modeled estimate
Runner-up · Kamala Harris, 2024 · 131,573 votes
Republican
Ronald Reagan1984
69,372votes
53.1% of the vote · R+7.6 · modeled estimate
Runner-up · Donald Trump, 2024 · 69,349 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
+33.2pts D vs U.S.
Place D+52.8 · U.S. D+19.5 · modeled estimate
Runner-up · Kamala Harris, 2024 · +31.6 pts
Republican
Calvin Coolidge1924
+10.8pts R vs U.S.
Place R+36.0 · U.S. R+25.2 · modeled estimate
Runner-up · Warren G. Harding, 1920 · +9.5 pts
current representation
Current officeholders
DCecilia Aguiar-CurryState House · 4
State legislative officeholder from OpenStates nightly current-legislator data.
U.S. House elections · 2 House
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.
Source · Akashic county-allocated estimate from certified county returns, House; not precinct-counted.
Year
Vote lead
Democratic
Republican
Total
2024
D
65.9%132,513
34.1%68,505
201,018
2018
D
83.8%121,561
16.2%23,562
145,123
Assembly District 4 delivered one of California's more decisive presidential margins in 2024, reflecting a densely populated constituency that has leaned strongly toward Democratic candidates across multiple cycles.
Across the recorded series it reached a Democratic high of 52.8 points in 1912 and a Republican high of 36.0 points in 1924. Between 2020 and 2024 the district moved 5.5 points toward the Republican candidate; the 2024 margin was 30.1 points.
A population of 474,327, a 29% non-Hispanic-white share, and a median household income of $91,167 describe the district. The district's voting pattern over the last decade is most similar to that of Assembly District 6 and Assembly District 15.
Akashic
Political twins — state-house districts
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.
Compare two places, side by side
Twelve curated comparisons line up election history, demographics, and the divergence story for two places at a glance. Browse all comparisons → · Or open the source-auditable district brief for electoral baseline, electorate, current-cycle coverage, geography, official dates, and methodology. Open campaign intelligence report →
Cite this page
All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
California 4th State House District. Akashic. https://akashic.app/sld-lower/06004/. Accessed May 20, 2026. License: CC BY 4.0.
How did California 4th State House District vote in 2024?
In 2024, California 4th State House District voted Democratic by 30.1 points (D+30.1), carried by the Democratic candidate. Out of 206,425 votes cast, 131,573 went Democratic and 69,349 went Republican.
When did California 4th State House District last vote Republican?
The most recent presidential election in which California 4th State House District voted Republican was 1984.
How many people live in California 4th State House District?
California 4th State House District has a population of 474,327 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in California 4th State House District?
Median household income in California 4th State House District is $91,167 — above the national median of $80,734. The California state median is $99,122.
What is the political history of California 4th State House District?
Akashic tracks 38 presidential elections in California 4th State House District from 1876 to 2024. Of those, 26 went Democratic and 12 went Republican.