- Lead
- 78,893
- Total
- 268,478
- vs nation
- D+30.9
California 77th State House District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 93,978
- Total
- 288,534
- vs nation
- D+28.1
- Lead
- 63,255
- Total
- 242,800
- vs nation
- D+24.0
- Lead
- 32,123
- Total
- 217,825
- vs nation
- D+10.9
- Lead
- 39,194
- Total
- 225,914
- vs nation
- D+10.1
- Lead
- 2,726
- Total
- 205,009
- vs nation
- D+3.8
- Lead
- 5,527
- Total
- 174,081
- vs nation
- D+2.7
- Lead
- 8,463
- Total
- 161,467
- vs nation
- R+3.3
Key facts
- 2024 presidential margin
- D+29.4MIT Election Lab
- Population
- 508,4482024 5-year
- Population density
- 3,820 / sq mi2024 5-year · TIGER/Line
- Land area
- 133 sq miTIGER/Line
- Median household income
- $130,7712024 5-year
- White (non-Hispanic)
- 65.6%2024 5-year
- Black
- 2.2%2024 5-year
- Hispanic / Latino
- 14.7%2024 5-year
- Peak Democratic margin
- D+44.0 in 1912MIT Election Lab
- Peak Republican margin
- R+38.7 in 1924MIT Election Lab
- Most similar
- Assembly District 78, CA · twin score 91.0
presidential history
Party record book
California 77th 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
66.6%
12,632 votes · D+35.0 · modeled estimate
Runner-up · Joe Biden, 2020 · 65.1%
Republican
Herbert Hoover1928
63.2%
7,975 votes · R+28.4 · modeled estimate
Runner-up · Ronald Reagan, 1984 · 61.8%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
187,874votes
65.1% of the vote · D+32.6 · modeled estimate
Runner-up · Kamala Harris, 2024 · 169,529 votes
Republican
George W. Bush2004
99,800votes
48.7% of the vote · D+1.3 · modeled estimate
Runner-up · Donald Trump, 2020 · 93,896 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
Kamala Harris2024
+30.9pts D vs U.S.
Place D+29.4 · U.S. R+1.5 · modeled estimate
Runner-up · Joe Biden, 2020 · +28.1 pts
Republican
Ronald Reagan1980
+17.5pts R vs U.S.
Place R+27.3 · U.S. R+9.7 · modeled estimate
Runner-up · Barry Goldwater, 1964 · +15.7 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 77 sits at California's competitive edge, returning a presidential margin under one point in 2024 — a rare occurrence in a state where most legislative districts lean decisively in one direction.
Across the recorded series it reached a Democratic high of 44.0 points in 1912 and a Republican high of 38.7 points in 1924. Between 2020 and 2024 the district moved 3.2 points toward the Republican candidate; the 2024 margin was 29.4 points.
A population of 508,448, a 66% non-Hispanic-white share, and a median household income of $130,771 describe the district. The district's voting pattern over the last decade is most similar to that of Assembly District 78 and State House District 48.
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 77th State House District. Akashic. https://akashic.app/sld-lower/06077/. Accessed May 20, 2026. License: CC BY 4.0.