- Lead
- 28,987
- Total
- 175,454
- vs nation
- D+18.0
California 48th State House District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 62,639
- Total
- 200,474
- vs nation
- D+26.8
- Lead
- 56,803
- Total
- 156,829
- vs nation
- D+34.1
- Lead
- 39,826
- Total
- 147,060
- vs nation
- D+23.2
- Lead
- 38,942
- Total
- 154,217
- vs nation
- D+18.0
- Lead
- 15,783
- Total
- 143,623
- vs nation
- D+13.4
- Lead
- 19,476
- Total
- 127,761
- vs nation
- D+14.7
- Lead
- 15,509
- Total
- 114,484
- vs nation
- D+5.0
Key facts
- 2024 presidential margin
- D+16.5MIT Election Lab
- Population
- 480,8812024 5-year
- Population density
- 5,651 / sq mi2024 5-year · TIGER/Line
- Land area
- 85.1 sq miTIGER/Line
- Median household income
- $97,0902024 5-year
- White (non-Hispanic)
- 15.0%2024 5-year
- Black
- 2.7%2024 5-year
- Hispanic / Latino
- 60.9%2024 5-year
- Peak Democratic margin
- D+36.2 in 2016MIT Election Lab
- Peak Republican margin
- R+65.4 in 1924MIT Election Lab
- Most similar
- Assembly District 56, CA · twin score 98.2
presidential history
Party record book
California 48th 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
Hillary Clinton2016
65.0%
101,903 votes · D+36.2 · modeled estimate
Runner-up · Joe Biden, 2020 · 64.6%
Republican
Herbert Hoover1928
75.9%
29,704 votes · R+53.7 · modeled estimate
Runner-up · Warren G. Harding, 1920 · 74.8%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
129,464votes
64.6% of the vote · D+31.2 · modeled estimate
Runner-up · Hillary Clinton, 2016 · 101,903 votes
Republican
Richard Nixon1972
90,796votes
62.7% of the vote · R+28.8 · modeled estimate
Runner-up · Ronald Reagan, 1984 · 83,353 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
Hillary Clinton2016
+34.1pts D vs U.S.
Place D+36.2 · U.S. D+2.1 · modeled estimate
Runner-up · Joe Biden, 2020 · +26.8 pts
Republican
Calvin Coolidge1924
+40.2pts R vs U.S.
Place R+65.4 · U.S. R+25.2 · modeled estimate
Runner-up · Theodore Roosevelt, 1904 · +38.2 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.
Assembly District 48 sits within Los Angeles County and has delivered consistent double-digit Democratic margins in recent presidential cycles, reflecting the denser urban and suburban demographics typical of the region.
Across the recorded series it reached a Democratic high of 36.2 points in 2016 and a Republican high of 65.4 points in 1924. Between 2020 and 2024 the district moved 14.7 points toward the Republican candidate; the 2024 margin was 16.5 points.
A population of 480,881, a 15% non-Hispanic-white share, and a median household income of $97,090 describe the district. The district's voting pattern over the last decade is most similar to that of Assembly District 56 and Assembly District 64.
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 48th State House District. Akashic. https://akashic.app/sld-lower/06048/. Accessed May 20, 2026. License: CC BY 4.0.