congressional districtCalifornia 45th Congressional District
presidential margin
2004–2024 · Democratic minus Republican
2004R+15.3
2008D+1.8
2012D+8.5
2016D+21.2
2020D+10.5
2024D+3.9
net swing · 2004→2024D+19.2R+15.3 → D+3.9
vs. U.S. · 2024D+5.4D+3.9 vs R+1.5
presidential returns
2024 turnout 61.0% of 492,340 citizens 18+
Year
Democrat
Republican
Others
Total
CVAP
Turnout
2024
151,716
139,855
8,741
300,312
492,340
61.0%
2020
182,369
147,121
6,330
335,820
484,646†
69.3%
2016
146,853
93,114
13,896
253,863
460,572†
55.1%
2012
128,167
107,721
6,007
241,895
430,819†
56.1%
2008
125,449
121,097
625
247,171
411,505†
60.1%
2004
99,925
136,473
3,054
239,452
392,192†
61.1%
† Citizen voting-age population estimated for prior cycles from the constituent-county ACS trend anchored to the current figure. Source: ACS 5-year, table B05003.
——
D+60R+60
20042024
District by 2024 margin · Precinct returns · VEST · MIT Election Lab
People and households
Who lives here
Exact values for this place, its state, and the United States.
Race · ethnicity · ancestry
Communities and origins
GroupCA-45CaliforniaUnited States
Vietnamese12.1%1.7%0.6%
Chinese6.7%3.9%1.3%
Korean5.8%1.2%0.4%
Filipino5.2%3.3%0.9%
Asian Indian3.5%2.3%1.4%
Japanese1.9%0.6%0.2%
Taiwanese0.9%0.3%—
Pakistani0.6%——
Mexican28.0%32.3%11.3%
Salvadoran1.4%2.0%0.7%
Guatemalan1.0%1.3%0.5%
Spanish0.4%0.3%—
Puerto Rican0.4%0.6%1.8%
Colombian0.4%0.3%0.4%
Spaniard0.4%0.3%—
Cuban0.3%—0.7%
German5.1%6.8%12.5%
English4.9%6.3%9.5%
Irish4.1%5.9%9.4%
American3.1%2.8%5.3%
Italian2.5%3.4%4.8%
French1.0%1.3%1.6%
Polish0.9%0.9%2.2%
Scottish0.8%0.9%1.3%
African American†2.0%4.4%9.9%
Hispanic or Latino counts residents of any race; the race groups count only their non-Hispanic residents, so the groups are mutually exclusive and sum to 100%. Expand a row to see ancestries reported within that group.
Age and life stage
Measure
CA-45
California
United States
Median age
40.4
37.9
39.1
Age 18–24
8.9%
9.1%
9.2%
Age 65 and older
16.1%
15.6%
17.2%
Household economy
Measure
CA-45
California
United States
Median household income
$105,124
$99,122
$84,427
Poverty rate
10.2%
12.0%
12.5%
Bachelor's degree or higher (25+)
43.1%
36.6%
35.6%
Languages at home
Measure
CA-45
California
United States
Speaks a non-English language at home
47.4%
44.4%
22.3%
Spanish
25.9%
28.4%
13.6%
Other Indo-European
3.7%
3.4%
2.0%
Chinese (incl. Mandarin & Cantonese)
3.3%
3.5%
1.1%
Vietnamese
5.7%
1.5%
0.5%
Religious landscape
Measure
CA-45
California
United States
Catholic
—
26.2%
18.6%
Evangelical Protestant
—
9.0%
16.5%
Unclaimed / not counted
—
55.2%
51.5%
American Community Survey 2024 5-year (CVAP, income, age, poverty, education, language, race, ancestry) · presidential returns from MIT Election Lab through 2024 · 2020 U.S. Religion Census (ASARB) — congregational adherents; unclaimed is the residual not counted by congregations.
California 45th Congressional District
presidential history
Presidential margin, 2004–2024
Democratic minus Republican, by election
Presidential margin over time
Year
Margin (D minus R)
2004
−15.3%
2008
+1.8%
2012
+8.5%
2016
+21.2%
2020
+10.5%
2024
+3.9%
DemocraticRepublican
6 presidential elections
Third column names the leading third-party or independent finisher. Source · MIT Election Lab · ICPSR · VEST (precinct-level 2024). Swing · margin change from the prior cycle. vs U.S. · margin relative to the national result that year. Third-party votes in 2012 are allocated from certified county totals by this place's share of each county's two-party vote — that cycle's precinct source records two-party splits. † 2004 sub-county results are estimated: the source's block-level detail for this cycle was unreliable — either county/municipality-level consolidated reporting (COVID-era) or a precinct-to-block allocation that misplaced votes — so the figures are allocated from the constituent county totals in proportion to the place and scaled to certified totals.
Federal officeholders only. State and local officeholders are planned for the next data pass.
Congressional elections · 22 House races · 17 Senate races
U.S. House
Each result reflects the U.S. House district as it was drawn for that election; redistricting has redrawn these lines over time, so they can differ from the current 120th-Congress district shown on the map above.
Source · MIT Election Lab (MEDSL), House. CC-BY 4.0.
Year
District
Won
Democratic
Republican
Total
2024
45
D
50.1%158,264
49.9%157,611
315,875
2022
45
R
47.6%103,466
52.4%113,960
217,426
2020
45
D
53.5%221,843
46.5%193,096
414,939
2018
45
D
52.1%158,906
47.9%146,383
305,289
2016
45
R
41.4%129,231
58.6%182,618
311,849
2014
45
R
34.9%56,819
65.1%106,083
162,902
2012
45
R
41.5%121,814
58.5%171,417
293,231
2010
45
R
42.1%87,141
51.5%106,472
206,801
2008
45
R
41.7%111,026
58.3%155,166
266,192
2006
45
R
39.3%64,613
60.7%99,638
164,251
2004
45
R
33.4%76,967
66.6%153,523
230,490
2002
45
R
32.7%43,692
65.2%87,101
133,533
2000
45
R
32.4%71,066
62.1%136,275
219,385
1998
45
R
37.3%60,022
58.7%94,296
160,770
1996
45
R
33.2%68,312
61.0%125,326
205,522
1994
45
R
30.9%55,849
69.1%124,875
180,724
1992
45
R
39.0%88,508
54.5%123,731
227,016
1990
45
R
0.0%0
72.8%123,591
169,659
1988
45
R
24.0%54,012
74.0%166,451
224,903
1986
45
R
21.2%32,800
76.9%118,900
154,675
1984
45
R
22.9%45,325
75.1%149,011
198,307
1982
45
R
29.2%50,148
68.6%117,771
171,758
U.S. Senate
The statewide Senate race, counted in this district — aggregated from the precinct-level returns that fall inside its boundaries (not a statewide figure).
Votes · MIT Election Lab (MEDSL) precinct returns (CC BY 4.0); aggregated to the district over VEST precinct geometry (CC BY-NC 4.0).
Year
Won
Democratic
Republican
Total
2024
D
51.4%150,855
48.6%142,657
293,512
2022
D
61.1%6,621,621
38.9%4,222,029
10,843,650
2018
D
100.0%11,113,364
0.0%0
11,113,364
2016
D
100.0%12,244,170
0.0%0
12,244,170
2012
D
62.5%7,864,624
37.5%4,713,887
12,578,511
2010
D
52.2%5,218,441
42.2%4,217,366
10,000,093
2006
D
59.4%5,076,289
35.0%2,990,822
8,541,150
2004
D
57.7%6,955,728
37.8%4,555,922
12,053,242
2000
D
55.8%5,932,522
36.6%3,886,853
10,623,608
1998
D
53.1%4,410,056
43.0%3,575,078
8,311,905
1994
D
46.7%3,979,152
44.8%3,817,025
8,513,916
1992
D
47.9%5,173,467
43.0%4,644,182
10,799,436
1988
R
44.0%4,287,253
52.8%5,143,409
9,743,547
1986
D
49.3%3,646,672
47.9%3,541,804
7,398,462
1982
R
44.8%3,494,968
51.5%4,022,565
7,805,450
1980
D
56.5%4,704,098
37.1%3,091,671
8,324,012
1976
R
46.9%3,502,862
50.2%3,748,973
7,470,586
2024 U.S. Senate — every candidate counted in this district
Adam B Schiff · Democrat51.4%150,855
Steve Garvey · Republican48.6%142,657
CA-45 covers parts of Orange County once considered reliably Republican turf; the 2024 presidential margin of D+6.3 reflects a suburban realignment driven by demographic change and growing shares of college-educated and Asian American voters.
Across the recorded series it reached a Democratic high of 21.2 points in 2016 and a Republican high of 15.3 points in 2004. Between 2020 and 2024 the district moved 6.5 points toward the Republican candidate; the 2024 margin was 3.9 points.
A population of 757,128, a 20% non-Hispanic-white share, and a median household income of $105,124 describe the district. The district's voting pattern over the last decade is most similar to that of Congressional District 28 and Congressional District 6.
Akashic
Political twins — districts
The congressional 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.
Compare two places, side by side
Twelve curated comparisons line up election history, demographics, and the divergence story for two places at a glance. Browse all comparisons →
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California 45th Congressional District. Akashic. https://akashic.app/cd/0645/. Accessed May 20, 2026. License: CC BY 4.0.
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How did California 45th Congressional District vote in 2024?
In 2024, California 45th Congressional District voted Democratic by 3.9 points (D+3.9), carried by the Democratic candidate. Out of 300,312 votes cast, 151,716 went Democratic and 139,855 went Republican.
When did California 45th Congressional District last vote Republican?
The most recent presidential election in which California 45th Congressional District voted Republican was 2004.
How many people live in California 45th Congressional District?
California 45th Congressional District has a population of 757,128 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in California 45th Congressional District?
Median household income in California 45th Congressional District is $105,124 — above the national median of $80,734. The California state median is $99,122.
What is the political history of California 45th Congressional District?
Akashic tracks 6 presidential elections in California 45th Congressional District from 2004 to 2024. Of those, 5 went Democratic and 1 went Republican.
