- Lead
- 28,688
- Total
- 224,540
- vs nation
- R+11.3
California 63rd State House District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 13,725
- Total
- 228,759
- vs nation
- R+10.5
- Lead
- 16,263
- Total
- 169,203
- vs nation
- R+11.7
- Lead
- 20,599
- Total
- 150,503
- vs nation
- R+17.5
- Lead
- 19,337
- Total
- 146,432
- vs nation
- R+20.5
- Lead
- 40,891
- Total
- 130,199
- vs nation
- R+28.9
- Lead
- 22,371
- Total
- 104,165
- vs nation
- R+22.0
- Lead
- 14,732
- Total
- 89,163
- vs nation
- R+25.0
Key facts
- 2024 presidential margin
- R+12.8MIT Election Lab
- Population
- 480,6632024 5-year
- Population density
- 1,356 / sq mi2024 5-year · TIGER/Line
- Land area
- 354 sq miTIGER/Line
- Median household income
- $116,2712024 5-year
- White (non-Hispanic)
- 40.0%2024 5-year
- Black
- 6.2%2024 5-year
- Hispanic / Latino
- 37.2%2024 5-year
- Peak Democratic margin
- D+21.4 in 1912MIT Election Lab
- Peak Republican margin
- R+67.3 in 1928MIT Election Lab
- Most similar
- Assembly District 9, CA · twin score 95.0
presidential history
Party record book
California 63rd State House District · the strongest Democratic and Republican presidential performances recorded here, measured three ways.
1896–2024 · 33 presidential cycles
Highest vote share
Largest share of the presidential candidate vote cast here.
Democratic
Lyndon B. Johnson1964
48.9%
15,455 votes · R+2.1 · modeled estimate
Runner-up · Joe Biden, 2020 · 46.1%
Republican
Herbert Hoover1928
83.0%
4,839 votes · R+67.3 · modeled estimate
Runner-up · Warren G. Harding, 1920 · 76.9%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
105,410votes
46.1% of the vote · R+6.0 · modeled estimate
Runner-up · Kamala Harris, 2024 · 94,559 votes
Republican
Donald Trump2024
123,247votes
54.9% of the vote · R+12.8 · modeled estimate
Runner-up · Donald Trump, 2020 · 119,135 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
+1.9pts D vs U.S.
Place D+21.4 · U.S. D+19.5 · a third-party candidate carried the Place · modeled estimate
Runner-up · George McGovern, 1972 · −10.4 pts
Republican
Herbert Hoover1928
+49.8pts R vs U.S.
Place R+67.3 · U.S. R+17.5 · modeled estimate
Runner-up · William McKinley, 1900 · +43.2 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 Inland Empire's eastern fringe, AD-63 backed the 2024 Republican presidential nominee by nearly 17 points, making it an outlier in a state legislative map dominated by Democratic-leaning districts.
Across the recorded series it reached a Democratic high of 21.4 points in 1912 and a Republican high of 67.3 points in 1928. Between 2020 and 2024 the district moved 6.8 points toward the Republican candidate; the 2024 margin was 12.8 points.
A population of 480,663, a 40% non-Hispanic-white share, and a median household income of $116,271 describe the district. The district's voting pattern over the last decade is most similar to that of Assembly District 9 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 63rd State House District. Akashic. https://akashic.app/sld-lower/06063/. Accessed May 20, 2026. License: CC BY 4.0.