- Lead
- 3,986
- Total
- 145,410
- vs nation
- R+1.3
California 27th State House District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 20,861
- Total
- 154,727
- vs nation
- D+9.0
- Lead
- 17,487
- Total
- 120,874
- vs nation
- D+12.4
- Lead
- 12,316
- Total
- 107,327
- vs nation
- D+7.6
- Lead
- 13,586
- Total
- 111,828
- vs nation
- D+4.9
- Lead
- 7,814
- Total
- 99,600
- vs nation
- R+5.4
- Lead
- 1,684
- Total
- 87,757
- vs nation
- R+2.4
- Lead
- 5,105
- Total
- 82,494
- vs nation
- R+2.3
Key facts
- 2024 presidential margin
- R+2.7MIT Election Lab
- Population
- 521,3062024 5-year
- Population density
- 115 / sq mi2024 5-year · TIGER/Line
- Land area
- 4,544 sq miTIGER/Line
- Median household income
- $66,6772024 5-year
- White (non-Hispanic)
- 20.1%2024 5-year
- Black
- 3.6%2024 5-year
- Hispanic / Latino
- 66.3%2024 5-year
- Peak Democratic margin
- D+58.3 in 1936MIT Election Lab
- Peak Republican margin
- R+31.5 in 1924MIT Election Lab
- Most similar
- Assembly District 35, CA · twin score 98.6
presidential history
Party record book
California 27th 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
78.4%
17,239 votes · D+58.3 · modeled estimate
Runner-up · Franklin D. Roosevelt, 1932 · 72.5%
Republican
Warren G. Harding1920
54.8%
5,098 votes · R+18.6 · modeled estimate
Runner-up · George W. Bush, 2004 · 53.4%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
86,073votes
55.6% of the vote · D+13.5 · modeled estimate
Runner-up · Kamala Harris, 2024 · 68,844 votes
Republican
Donald Trump2024
72,830votes
50.1% of the vote · R+2.7 · modeled estimate
Runner-up · Donald Trump, 2020 · 65,212 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
Adlai Stevenson1956
+35.7pts D vs U.S.
Place D+20.3 · U.S. R+15.4 · modeled estimate
Runner-up · Franklin D. Roosevelt, 1936 · +34.0 pts
Republican
Calvin Coolidge1924
+6.3pts R vs U.S.
Place R+31.5 · U.S. R+25.2 · modeled estimate
Runner-up · George W. Bush, 2004 · +5.4 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 27 is one of a handful of California state house seats where the 2024 presidential race finished at R+3, reflecting a suburban or exurban constituency that diverges sharply from the state's overall Democratic tilt.
Across the recorded series it reached a Democratic high of 58.3 points in 1936 and a Republican high of 31.5 points in 1924. Between 2020 and 2024 the district moved 16.2 points toward the Republican candidate; the 2024 margin was 2.7 points.
A population of 521,306, a 20% non-Hispanic-white share, and a median household income of $66,677 describe the district. The district's voting pattern over the last decade is most similar to that of Assembly District 35 and Assembly District 58.
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 27th State House District. Akashic. https://akashic.app/sld-lower/06027/. Accessed May 20, 2026. License: CC BY 4.0.