Riverside-San Bernardino-Ontario, CA Metro Area — Elections 1892–2024

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How it voted

Share of the 2024 vote

Donald Trump ✓Republican	49.5%	842,093
Kamala HarrisDemocratic	47.8%	813,896
Robert F. Kennedy Jr.American Independent	2.7%	46,130

D+60

R+60

2 counties, each filled by 2024 D-vs-R margin. Hover any county for its result.

County-level results (2 counties) — table

2024 presidential result by county for Riverside-San Bernardino-Ontario, CA, CA — winner and D-vs-R margin.
County	Winner	Margin
Riverside County, CA	Republican	R+1.3
San Bernardino County, CA	Republican	R+2.1

34 presidential elections

Third column names the leading third-party or independent finisher. Source · MIT Election Lab · ICPSR · VEST (precinct-level 2024).
Year	Won	Democratic	Republican	Other	Margin	Total
2024	R	47.8%Harris813,896	49.5%Trump842,093	2.7%Kennedy46,130	−1.7%	1,702,119
2020	D	53.5%Biden984,199	44.4%Trump815,401	2.1%Jorgensen38,686	+9.2%	1,838,286
2016	D	50.8%Clinton714,528	43.0%Trump604,483	6.1%Johnson86,363	+7.8%	1,405,374
2012	D	50.9%Obama634,172	46.6%Romney580,485	2.5%Johnson31,389	+4.3%	1,246,046
2008	D	51.1%Obama640,737	46.9%McCain587,449	2.0%Nader25,447	+4.3%	1,253,633
2004	R	42.2%Kerry456,595	56.6%Bush611,779	1.2%Badnarik12,481	−14.4%	1,080,855
2000	R	46.1%Gore417,325	50.1%Bush453,712	3.9%Nader34,983	−4.0%	906,020
1996	R	43.7%Clinton351,951	44.6%Dole358,746	11.7%Perot94,271	−0.8%	804,968
1992	D	38.7%Clinton349,875	37.2%Bush336,020	24.2%Perot218,450	+1.5%	904,345
1988	R	39.0%Dukakis284,240	59.7%Bush435,146	1.2%Paul8,970	−20.7%	728,356
1984	R	34.7%Mondale218,497	64.2%Reagan404,395	1.1%Bergland7,015	−29.5%	629,907
1980	R	31.6%Carter168,440	59.8%Reagan318,599	8.6%Anderson46,051	−28.2%	533,090
1976	R	48.2%Carter205,864	49.4%Ford211,039	2.5%Macbride10,540	−1.2%	427,443
1972	R	36.8%McGovern157,577	59.0%Nixon252,809	4.3%Schmitz18,274	−22.2%	428,660
1968	R	39.5%Humphrey150,564	51.2%Nixon195,388	9.3%Wallace35,334	−11.8%	381,286
1964	D	57.0%Johnson203,540	42.9%Goldwater153,310	0.1%Hass338	+14.1%	357,188
1960	R	45.9%Kennedy141,765	53.6%Nixon165,336	0.5%Byrd1,488	−7.6%	308,589
1956	R	40.8%Stevenson99,044	58.9%Eisenhower143,029	0.4%Andrews908	−18.1%	242,981
1952	R	39.3%Stevenson80,631	59.8%Eisenhower122,795	0.9%Hallinan1,854	−20.5%	205,280
1948	R	44.9%Truman68,996	51.3%Dewey78,779	3.9%Thurmond5,927	−6.4%	153,702
1944	D	49.9%Roosevelt57,969	49.3%Dewey57,252	0.9%Thomas992	+0.6%	116,213
1940	D	51.7%Roosevelt57,523	47.0%Willkie52,290	1.3%Thomas1,445	+4.7%	111,258
1936	D	55.9%Roosevelt50,966	42.7%Landon38,893	1.4%Lemke1,264	+13.2%	91,123
1932	D	48.5%Roosevelt37,644	46.6%Hoover36,206	4.9%Thomas3,810	+1.9%	77,660
1928	R	23.0%Smith14,205	75.9%Hoover46,829	1.1%Thomas659	−52.9%	61,693
1924	R	9.1%Davis3,952	58.7%Coolidge25,593	32.2%La Follette14,032	−49.7%	43,577
1920	R	25.5%Cox8,418	65.5%Harding21,642	9.0%Debs2,979	−40.0%	33,039
1916	R	37.5%Wilson13,959	52.1%Hughes19,384	10.3%Benson3,841	−14.6%	37,184
1912	O	34.6%Wilson8,798	0.0%Taft0	65.4%Roosevelt16,648	Roosevelt +30.8	25,446
1908	R	27.8%Bryan4,059	54.6%Taft7,958	17.6%Debs2,564	−26.7%	14,581
1904	R	21.0%Parker2,251	60.9%Roosevelt6,522	18.1%Debs1,941	−39.9%	10,714
1900	R	35.4%Bryan3,481	55.6%McKinley5,464	8.9%Woolley875	−20.2%	9,820
1896	R	45.6%Bryan4,424	50.4%McKinley4,881	4.0%Palmer388	−4.7%	9,693
1892	R	33.6%Cleveland2,546	48.7%Harrison3,686	17.6%Weaver1,335	−15.1%	7,567

presidential history

Presidential margin, 1892–2024

Democratic minus Republican, by election

Presidential margin over time
Year	Margin (D minus R)
1892	−15.1%
1896	−4.7%
1900	−20.2%
1904	−39.9%
1908	−26.7%
1912	+34.6%
1916	−14.6%
1920	−40.0%
1924	−49.7%
1928	−52.9%
1932	+1.9%
1936	+13.2%
1940	+4.7%
1944	+0.6%
1948	−6.4%
1952	−20.5%
1956	−18.1%
1960	−7.6%
1964	+14.1%
1968	−11.8%
1972	−22.2%
1976	−1.2%
1980	−28.2%
1984	−29.5%
1988	−20.7%
1992	+1.5%
1996	−0.8%
2000	−4.0%
2004	−14.4%
2008	+4.3%
2012	+4.3%
2016	+7.8%
2020	+9.2%
2024	−1.7%

DemocraticRepublican

voter registration

Registered voters

By party of registration, over time

DemocraticRepublicanUnaffiliatedOther parties

Voter registration in Riverside-San Bernardino-Ontario, CA
Year	Total registered	Democratic	Republican	Unaffiliated	Other
2022	2,445,247	1,000,150	742,605	510,500	191,992
2024	2,539,899	1,009,092	796,637	518,616	215,554

Source: California Secretary of State

Once reliably Republican exurban terrain, the Inland Empire has shifted markedly as Latino population growth and in-migration from coastal California have compressed margins in federal and statewide contests over the past two decades.

Across the recorded series it reached a Democratic high of 34.6 points in 1912 and a Republican high of 52.9 points in 1928. Between 2020 and 2024 the metro moved 10.8 points toward the Republican candidate; the 2024 margin was 1.7 points.

A population of 4,675,704, a 28% non-Hispanic-white share, and a median household income of $89,505 describe the metro. The metro's voting pattern over the last decade is most similar to that of Fresno, CA and Modesto, CA.

Political twins — metros

The metros whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.

Fresno, CA

95.2twin score

% Latino% Whiteelasticity≠ population scale

Modesto, CA

93.9twin score

elasticity% Latino% White≠ population scale

San Antonio-New Braunfels, TX

90.3twin score

% Latinopopulation scale% White≠ % Asian

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 →

Cite this page

All citations released under CC BY 4.0. Attribution: Akashic Intelligence.

Riverside-San Bernardino-Ontario, CA, California. Akashic. https://akashic.app/cbsa/40140/. Accessed May 20, 2026. License: CC BY 4.0.

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Places within Riverside-San Bernardino-Ontario, CA

counties2

Riverside County San Bernardino County

Frequently asked questions

How did Riverside-San Bernardino-Ontario, CA, California vote in 2024?

In 2024, Riverside-San Bernardino-Ontario, CA, California voted Republican by 1.7 points (R+1.7), carried by the Republican candidate. Out of 1,702,119 votes cast, 813,896 went Democratic and 842,093 went Republican.

When did Riverside-San Bernardino-Ontario, CA, California last vote Democratic?

The most recent presidential election in which Riverside-San Bernardino-Ontario, CA, California voted Democratic was 2020.

How many people live in Riverside-San Bernardino-Ontario, CA, California?

Riverside-San Bernardino-Ontario, CA, California has a population of 4,675,704 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.

What is the median household income in Riverside-San Bernardino-Ontario, CA, California?

Median household income in Riverside-San Bernardino-Ontario, CA, California is $89,505 — above the national median of $80,734. The California state median is $99,122.

What is the political history of Riverside-San Bernardino-Ontario, CA, California?

Akashic tracks 34 presidential elections in Riverside-San Bernardino-Ontario, CA, California from 1892 to 2024. Of those, 10 went Democratic and 23 went Republican.