Ronald Reagan carried California R+16.2.

Walter Mondale (D) vs Ronald Reagan (R) in California, 1984. The state ran 2.0 points more Democratic than the nation (R+18.2 nationally).

Nominees: Walter Mondale (D) · Ronald Reagan (R)

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California result

9,505,041 votes counted

Mondale (D)

3,922,519

41.3%

Reagan (R)

5,467,009

57.5%

All others

115,513

1.2%

Margin

R+16.2

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1984 presidential election

California, 1984

ReaganR+16.2

How it voted

Share of the 1984 vote

Ronald Reagan ✓Republican	57.5%	5,467,009
Walter MondaleDemocratic	41.3%	3,922,519
OtherAll other candidates	1.2%	115,513

D+60

R+60

58 counties, each filled by 1984 D-vs-R margin. Hover any county for its result.

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California's presidential margins

1876–2024, the 1984 contest in context

California's presidential margins

Year	Margin (D minus R)
1876	−1.8%
1880	+0.1%
1884	−6.7%
1888	−2.8%
1892	+1.2%
1896	−0.6%
1900	−13.1%
1904	−34.9%
1908	−22.5%
1912	+41.8%
1916	+0.4%
1920	−41.9%
1924	−49.0%
1928	−30.5%
1932	+21.0%
1936	+35.3%
1940	+16.1%
1944	+13.5%
1948	+0.4%
1952	−13.6%
1956	−11.1%
1960	−0.5%
1964	+18.3%
1968	−3.1%
1972	−13.5%
1976	−1.8%
1980	−16.8%
1984	−16.2%
1988	−3.6%
1992	+13.4%
1996	+12.9%
2000	+11.8%
2004	+9.9%
2008	+24.0%
2012	+23.1%
2016	+30.0%
2020	+29.1%
2024	+20.1%

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County results — 1984

58 counties; every row links to the county's full page.

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County	Won	Margin	Democratic	Republican	Total
Alameda County	D	+18.6%	282,041	192,408	480,874
Alpine County	R	−15.0%	194	264	466
Amador County	R	−24.6%	4,188	6,986	11,363
Butte County	R	−27.7%	25,421	45,381	71,964
Calaveras County	R	−29.9%	4,081	7,632	11,877
Colusa County	R	−32.1%	1,725	3,388	5,188
Contra Costa County	R	−9.9%	140,994	172,331	316,318
Del Norte County	R	−19.0%	2,696	3,996	6,841
El Dorado County	R	−31.2%	14,312	27,583	42,478
Fresno County	R	−9.6%	86,315	104,757	192,936
Glenn County	R	−40.9%	2,488	6,020	8,632
Humboldt County	R	−4.9%	25,217	27,832	53,891
Imperial County	R	−25.1%	8,237	13,829	22,301
Inyo County	R	−42.0%	2,360	5,863	8,338
Kern County	R	−31.0%	49,567	94,776	145,744
Kings County	R	−29.0%	7,324	13,364	20,848
Lake County	R	−11.2%	8,648	10,874	19,831
Lassen County	R	−23.9%	3,254	5,352	8,761
Los Angeles County	R	−10.1%	1,158,912	1,424,113	2,612,914
Madera County	R	−21.3%	8,994	13,954	23,241
Marin County	D	+0.6%	57,533	56,887	116,050
Mariposa County	R	−24.4%	2,399	3,989	6,518
Mendocino County	R	−6.2%	14,407	16,369	31,422
Merced County	R	−18.8%	17,012	24,997	42,477
Modoc County	R	−41.2%	1,219	2,995	4,310
Mono County	R	−46.2%	962	2,659	3,677
Monterey County	R	−15.4%	40,733	55,710	97,470
Napa County	R	−17.0%	18,599	26,322	45,561
Nevada County	R	−27.1%	11,198	19,809	31,768
Orange County	R	−50.4%	206,272	635,013	850,077
Placer County	R	−27.7%	21,294	38,035	60,427
Plumas County	R	−15.0%	3,837	5,224	9,228
Riverside County	R	−28.0%	102,043	182,324	287,202
Sacramento County	R	−12.4%	159,128	204,922	368,841
San Benito County	R	−22.8%	3,554	5,695	9,380
San Bernardino County	R	−30.8%	116,454	222,071	342,705
San Diego County	R	−31.9%	257,029	502,344	769,267
San Francisco County	D	+35.9%	193,278	90,219	286,972
San Joaquin County	R	−20.4%	53,846	81,795	137,213
San Luis Obispo County	R	−28.7%	26,946	49,035	76,950
San Mateo County	R	−5.0%	122,268	135,185	260,631
Santa Barbara County	R	−26.8%	51,243	89,314	142,320
Santa Clara County	R	−11.2%	229,865	288,638	526,639
Santa Cruz County	D	+8.1%	49,091	41,652	92,147
Shasta County	R	−25.9%	19,298	33,041	53,127
Sierra County	R	−15.7%	781	1,078	1,896
Siskiyou County	R	−18.9%	7,130	10,544	18,101
Solano County	R	−10.2%	41,982	51,678	94,798
Sonoma County	R	−3.4%	71,295	76,447	149,657
Stanislaus County	R	−19.4%	37,459	55,665	93,985
Sutter County	R	−44.0%	5,535	14,477	20,323
Tehama County	R	−27.4%	6,527	11,586	18,455
Trinity County	R	−22.3%	2,218	3,544	5,935
Tulare County	R	−28.8%	28,065	51,066	79,943
Tuolumne County	R	−17.7%	7,283	10,485	18,051
Ventura County	R	−38.5%	66,550	151,383	220,462
Yolo County	D	+3.0%	25,879	24,329	50,853
Yuba County	R	−28.8%	5,339	9,780	15,397