Ronald Reagan carried South Dakota R+28.8.

Jimmy Carter (D) vs Ronald Reagan (R) in South Dakota, 1980. The state ran 19.1 points more Republican than the nation (R+9.7 nationally). A US Senate contest shared the 1980 ballot here.

Nominees: Jimmy Carter (D) · Ronald Reagan (R)

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South Dakota result

327,703 votes counted

Carter (D)

103,855

31.7%

Reagan (R)

198,343

60.5%

All others

25,505

7.8%

Margin

R+28.8

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1980 presidential election

South Dakota, 1980

ReaganR+28.8

How it voted

Share of the 1980 vote

Ronald Reagan ✓Republican	60.5%	198,343
Jimmy CarterDemocratic	31.7%	103,855
John B. AndersonIndependent	7.8%	25,505

D+60

R+60

66 counties, each filled by 1980 D-vs-R margin. Hover any county for its result.

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South Dakota's presidential margins

1892–2024, the 1980 contest in context

South Dakota's presidential margins

Year	Margin (D minus R)
1892	−36.5%
1896	+0.2%
1900	−15.6%
1904	−49.4%
1908	−23.8%
1912	+42.1%
1916	+3.9%
1920	−41.0%
1924	−36.3%
1928	−21.0%
1932	+29.2%
1936	+11.5%
1940	−14.8%
1944	−16.7%
1948	−4.8%
1952	−38.5%
1956	−16.8%
1960	−16.4%
1964	+11.2%
1968	−11.3%
1972	−8.6%
1976	−1.5%
1980	−28.8%
1984	−26.5%
1988	−6.3%
1992	−3.5%
1996	−3.5%
2000	+22.7%
2004	−21.3%
2008	−8.4%
2012	−18.0%
2016	−29.8%
2020	−26.2%
2024	−29.2%

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County results — 1980

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

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County	Won	Margin	Democratic	Republican	Total
Aurora County	R	−25.5%	709	1,251	2,123
Beadle County	R	−23.8%	3,521	5,921	10,104
Bennett County	R	−43.0%	350	919	1,324
Bon Homme County	R	−37.8%	1,191	2,794	4,239
Brookings County	R	−16.3%	3,934	5,727	10,981
Brown County	R	−25.0%	6,050	10,550	17,999
Brule County	R	−26.8%	925	1,674	2,800
Buffalo County	R	−27.4%	147	272	456
Butte County	R	−51.5%	843	2,850	3,898
Campbell County	R	−72.7%	182	1,271	1,498
Charles Mix County	R	−18.9%	1,741	2,608	4,599
Clark County	R	−40.8%	774	1,963	2,911
Clay County	R	−11.6%	2,271	3,004	6,316
Codington County	R	−25.5%	3,353	5,903	9,990
Corson County	R	−38.3%	522	1,233	1,855
Custer County	R	−45.7%	708	2,057	2,955
Davison County	R	−19.2%	3,107	4,743	8,512
Day County	R	−17.3%	1,720	2,507	4,543
Deuel County	R	−27.9%	891	1,657	2,744
Dewey County	R	−25.2%	600	1,045	1,767
Douglas County	R	−54.7%	508	1,855	2,463
Edmunds County	R	−34.2%	883	1,881	2,914
Fall River County	R	−45.5%	982	2,831	4,067
Faulk County	R	−40.1%	520	1,300	1,945
Grant County	R	−23.7%	1,602	2,691	4,594
Gregory County	R	−41.9%	883	2,283	3,340
Haakon County	R	−61.9%	255	1,162	1,465
Hamlin County	R	−32.7%	903	1,885	3,007
Hand County	R	−41.2%	803	2,066	3,066
Hanson County	R	−24.2%	598	1,015	1,725
Harding County	R	−53.6%	205	727	974
Hughes County	R	−41.2%	1,751	4,652	7,048
Hutchinson County	R	−51.0%	1,145	3,789	5,180
Hyde County	R	−48.4%	273	864	1,221
Jackson County	R	−42.5%	354	929	1,352
Jerauld County	R	−24.5%	595	1,018	1,729
Jones County	R	−54.4%	189	689	919
Kingsbury County	R	−32.7%	1,132	2,376	3,807
Lake County	R	−15.1%	2,207	3,093	5,852
Lawrence County	R	−36.3%	2,259	5,306	8,403
Lincoln County	R	−23.7%	2,261	3,848	6,698
Lyman County	R	−41.0%	486	1,256	1,878
Marshall County	R	−19.7%	1,120	1,710	3,001
McCook County	R	−22.3%	1,223	2,014	3,544
McPherson County	R	−73.6%	287	2,056	2,402
Meade County	R	−48.1%	1,721	5,349	7,541
Mellette County	R	−35.8%	279	624	963
Miner County	R	−15.6%	833	1,172	2,171
Minnehaha County	R	−12.1%	20,008	26,256	51,478
Moody County	R	−12.7%	1,364	1,807	3,480
Oglala Lakota County	D	+41.1%	1,132	438	1,687
Pennington County	R	−42.1%	7,121	18,991	28,204
Perkins County	R	−50.3%	595	1,931	2,655
Potter County	R	−55.2%	436	1,633	2,169
Roberts County	R	−21.5%	1,829	2,904	5,009
Sanborn County	R	−28.5%	628	1,178	1,932
Spink County	R	−27.8%	1,572	2,915	4,834
Stanley County	R	−42.6%	339	892	1,299
Sully County	R	−55.0%	220	852	1,149
Todd County	D	+8.8%	972	803	1,923
Tripp County	R	−45.6%	947	2,669	3,776
Turner County	R	−39.2%	1,369	3,343	5,032
Union County	R	−19.0%	1,830	2,788	5,054
Walworth County	R	−53.6%	753	2,675	3,588
Yankton County	R	−30.4%	2,698	5,355	8,747
Ziebach County	R	−34.5%	246	523	804