- Lead
- 19,776
- Total
- 221,907
- vs nation
- R+7.4
California 16th State Senate District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 20,340
- Total
- 243,279
- vs nation
- D+3.9
- Lead
- 19,754
- Total
- 191,954
- vs nation
- D+8.2
- Lead
- 11,497
- Total
- 172,553
- vs nation
- D+2.8
- Lead
- 11,773
- Total
- 181,862
- vs nation
- R+0.8
- Lead
- 18,424
- Total
- 160,147
- vs nation
- R+9.0
- Lead
- 2,345
- Total
- 145,007
- vs nation
- R+2.1
- Lead
- 8,417
- Total
- 137,869
- vs nation
- R+2.4
Key facts
- 2024 presidential margin
- R+8.9MIT Election Lab
- Population
- 963,4172024 5-year
- Population density
- 225 / sq mi2024 5-year · TIGER/Line
- Land area
- 4,276 sq miTIGER/Line
- Median household income
- $61,7402024 5-year
- White (non-Hispanic)
- 11.7%2024 5-year
- Black
- 3.8%2024 5-year
- Hispanic / Latino
- 47.6%2024 5-year
- Peak Democratic margin
- D+60.0 in 1936MIT Election Lab
- Peak Republican margin
- R+18.9 in 1924MIT Election Lab
- Most similar
- State Senate District 14, CA · twin score 96.2
presidential history
Party record book
California 16th State Senate 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
79.5%
33,384 votes · D+60.0 · modeled estimate
Runner-up · Samuel J. Tilden, 1876 · 76.3%
Republican
George W. Bush2004
55.3%
88,507 votes · R+11.5 · modeled estimate
Runner-up · Ronald Reagan, 1984 · 53.5%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
128,909votes
53.0% of the vote · D+8.4 · modeled estimate
Runner-up · Hillary Clinton, 2016 · 99,232 votes
Republican
Donald Trump2024
118,371votes
53.3% of the vote · R+8.9 · modeled estimate
Runner-up · Donald Trump, 2020 · 108,569 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
William J. Bryan1896
+47.0pts D vs U.S.
Place D+41.0 · U.S. R+6.1 · modeled estimate
Runner-up · Adlai Stevenson, 1956 · +37.5 pts
Republican
George W. Bush2004
+9.0pts R vs U.S.
Place R+11.5 · U.S. R+2.5 · modeled estimate
Runner-up · Donald Trump, 2024 · +7.4 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.
| Year | Vote lead | Democratic | Republican | Total |
|---|---|---|---|---|
| 2018 | R | 41.3%84,887 | 58.7%120,584 | 205,471 |
California 16th State Senate District sits in the Pacific Coast. In 2024 it voted Republican.
Across the recorded series it reached a Democratic high of 60.0 points in 1936 and a Republican high of 18.9 points in 1924. Between 2020 and 2024 the district moved 17.3 points toward the Republican candidate; the 2024 margin was 8.9 points.
A population of 963,417, a 12% non-Hispanic-white share, and a median household income of $61,740 describe the district. The district's voting pattern over the last decade is most similar to that of State Senate District 14 and State Senate District 19.
The state-senate 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 16th State Senate District. Akashic. https://akashic.app/sld-upper/06016/. Accessed May 20, 2026. License: CC BY 4.0.