How did CA-03, California vote in the 2024 presidential election?

CA-03, California voted Democratic in 2024 with a margin of D+5.2. The Democratic candidate received 156,538 votes and the Republican candidate received 140,728 out of 306,339 total votes cast, a 7.1-point shift toward Republicans from 2020.

What is CA-03, California's political history?

CA-03, California has 5 presidential elections on record, spanning 2008 to 2024. It has voted Democratic in every presidential election since 2008. The largest single-election swing was 7.1 points in 2024.

What are the demographics of CA-03, California?

CA-03, California has a population of 778,710 according to the 2020 Census. The racial composition is 67.9% non-Hispanic white, 15.0% Hispanic, 1.7% Black. About 42% of residents hold a bachelor's degree or higher. Median household income is $106,071.

California's 3rd Congressional District

California · Latest: 2024↓ R+3.6 vs 2022

Leans Republican — flipped 3 times in 25 elections

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POPULATION
779K
HOUSE MARGIN
R+10.9
2024
PRES MARGIN
D+5.2
2024
LEAN
Lean D
COLLEGE+
42%

Place Story

What defines California's 3rd Congressional District

Methodology

Leans Democratic since 2008
- Lean D
- 5 straight D wins
Competitive with a modest baseline — persuasion matters on the margin.
Ticket-splitting: President ran 17.9pp ahead of House
- Divergence 17.8pp in 2008
Persuadable voters present — downballot races can run independent of presidential.
Biggest swing: R+7.1 in 2024
- 2020 → 2024
Atypical: older but Democratic-leaning (median age 44, D+10.7 avg)
- Median age 44
- D+10.7 avg
Hypothesis — likely college-town or affluent-suburb effect.

District in State Context

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Precinct Deep Dive

2024 / 2020 precinct vintages

See how each split precinct fragment inside CA-03 voted, swung, and lines up demographically.

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“How has California's 3rd Congressional District voted in House elections since 2000?”

Race & Ancestry

Who Lives Here

A race-first Census view with ancestry expansion where source coverage is strong enough to support detail.

CA-03Census ACS 2024Ancestry detail available

Census race profile

Major Census race and ethnicity groups shown as a share of total population.

Expand rows for ancestry detail

White (Non-Hispanic) 67.9%Hispanic 15.0%Asian 7.9%Multiracial 6.5%Black 1.7%Native American 0.9%

Group	CA-03	State	National
▶White (Non-Hispanic)(13)	67.9%	33.8%	57.4%
▶Hispanic / Latino(20)	15.0%	40.2%	19.3%
▶Asian(6)	7.9%	15.5%	6.0%
Multiracial / Other	6.5%	3.5%	4.0%
▶Middle Eastern / North African(11)	1.9%	—	0.9%
▶Black / African American(12)	1.7%	5.4%	12.2%
▶Native American / Alaska Native(5)	0.9%	1.3%	0.9%

Method notes

Census treats race and Hispanic/Latino origin as separate questions. Race categories other than Hispanic reflect total populations (small Hispanic overlap in Black, Asian, AIAN, NHPI). “Multiracial / Other” is derived as a non-overlapping remainder.

Click rows to expand ancestry detail. Ancestry from ACS B04006, B03001, B02020, B02016. Totals may differ from race — individuals can report multiple ancestries.

Black / African American (estimated remainder) is derived as Black population share minus reported Sub-Saharan African and West Indian ancestry. It is shown as an estimated ancestry detail, not a standalone Census ancestry category.

California's 3rd Congressional District

District in State Context

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Who Lives Here

Demographics

Turnout in CA-03

How competitive is CA-03?

Do voters in CA-03 split their tickets?

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