Ronald Reagan carried Colorado R+28.3.

Walter Mondale (D) vs Ronald Reagan (R) in Colorado, 1984. The state ran 10.1 points more Republican than the nation (R+18.2 nationally). A US Senate contest shared the 1984 ballot here.

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

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Colorado result

1,295,358 votes counted

Mondale (D)

454,975

35.1%

Reagan (R)

821,817

63.4%

All others

18,566

1.4%

Margin

R+28.3

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1984 presidential election

Colorado, 1984

ReaganR+28.3

How it voted

Share of the 1984 vote

Ronald Reagan ✓Republican	63.4%	821,817
Walter MondaleDemocratic	35.1%	454,975
OtherAll other candidates	1.4%	18,566

D+60

R+60

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

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Colorado's presidential margins

1880–2024, the 1984 contest in context

Colorado's presidential margins

Year	Margin (D minus R)
1880	−5.2%
1884	−12.6%
1888	−14.4%
1892	−41.1%
1896	+70.6%
1900	+13.6%
1904	−14.2%
1908	+1.1%
1912	+20.9%
1916	+26.0%
1920	−23.4%
1924	−35.0%
1928	−30.8%
1932	+13.4%
1936	+23.3%
1940	−2.6%
1944	−6.8%
1948	+5.4%
1952	−21.3%
1956	−19.7%
1960	−9.7%
1964	+23.1%
1968	−9.2%
1972	−28.0%
1976	−11.5%
1980	−24.0%
1984	−28.3%
1988	−7.8%
1992	+4.3%
1996	−1.4%
2000	−8.4%
2004	−4.7%
2008	+9.0%
2012	+5.4%
2016	+4.9%
2020	+13.5%
2024	+11.0%

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County results — 1984

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

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County	Won	Margin	Democratic	Republican	Total
Adams County	R	−21.6%	35,285	55,092	91,511
Alamosa County	R	−26.2%	1,720	2,953	4,711
Arapahoe County	R	−45.2%	39,891	107,556	149,554
Archuleta County	R	−45.0%	584	1,557	2,163
Baca County	R	−52.7%	580	1,903	2,509
Bent County	R	−20.7%	859	1,314	2,199
Boulder County	R	−11.7%	42,195	53,535	97,223
Chaffee County	R	−34.3%	1,779	3,680	5,550
Cheyenne County	R	−48.0%	307	892	1,218
Clear Creek County	R	−32.3%	1,089	2,151	3,292
Conejos County	R	−3.6%	1,553	1,669	3,247
Costilla County	D	+23.1%	997	621	1,631
Crowley County	R	−31.2%	517	993	1,527
Custer County	R	−54.1%	241	832	1,093
Delta County	R	−39.9%	2,835	6,678	9,639
Denver County	D	+2.3%	110,200	105,096	219,738
Dolores County	R	−58.1%	173	667	850
Douglas County	R	−59.8%	3,011	12,249	15,441
Eagle County	R	−37.2%	2,032	4,500	6,633
El Paso County	R	−51.1%	28,185	88,377	117,772
Elbert County	R	−52.1%	802	2,605	3,461
Fremont County	R	−35.5%	3,895	8,250	12,256
Garfield County	R	−39.2%	3,076	7,111	10,285
Gilpin County	R	−16.7%	634	896	1,571
Grand County	R	−46.9%	1,017	2,865	3,940
Gunnison County	R	−36.4%	1,424	3,100	4,605
Hinsdale County	R	−51.2%	98	310	414
Huerfano County	D	+0.7%	1,602	1,581	3,224
Jackson County	R	−57.5%	191	722	923
Jefferson County	R	−39.2%	53,700	124,496	180,628
Kiowa County	R	−51.8%	265	850	1,130
Kit Carson County	R	−55.4%	778	2,762	3,584
La Plata County	R	−36.2%	4,040	8,719	12,918
Lake County	R	−1.5%	1,324	1,364	2,747
Larimer County	R	−34.7%	23,896	49,883	74,848
Las Animas County	D	+10.1%	3,670	2,992	6,742
Lincoln County	R	−47.1%	587	1,661	2,278
Logan County	R	−45.8%	2,155	5,883	8,133
Mesa County	R	−40.5%	9,938	23,736	34,074
Mineral County	R	−47.1%	117	333	459
Moffat County	R	−48.2%	1,228	3,630	4,981
Montezuma County	R	−47.5%	1,665	4,753	6,506
Montrose County	R	−42.2%	2,864	7,162	10,173
Morgan County	R	−44.0%	2,331	6,097	8,556
Otero County	R	−27.5%	3,005	5,373	8,615
Ouray County	R	−42.5%	366	914	1,290
Park County	R	−43.4%	782	2,041	2,902
Phillips County	R	−43.9%	651	1,689	2,367
Pitkin County	R	−14.9%	2,293	3,117	5,528
Prowers County	R	−39.9%	1,467	3,501	5,095
Pueblo County	D	+4.8%	27,126	24,634	52,200
Rio Blanco County	R	−62.5%	484	2,131	2,637
Rio Grande County	R	−47.3%	1,104	3,122	4,262
Routt County	R	−34.1%	2,051	4,239	6,408
Saguache County	R	−16.0%	867	1,201	2,084
San Juan County	R	−26.4%	183	320	519
San Miguel County	R	−11.8%	654	833	1,521
Sedgwick County	R	−45.3%	429	1,146	1,583
Summit County	R	−33.9%	1,588	3,253	4,918
Teller County	R	−53.0%	1,043	3,460	4,562
Washington County	R	−56.3%	568	2,080	2,684
Weld County	R	−38.2%	13,863	31,293	45,679
Yuma County	R	−49.8%	1,121	3,394	4,567