Mitt Romney carried South Dakota R+18.0.

Barack Obama (D) vs Mitt Romney (R) in South Dakota, 2012. The state ran 21.9 points more Republican than the nation (D+3.9 nationally).

Nominees: Barack Obama (D) · Mitt Romney (R)

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South Dakota result

363,815 votes counted

Obama (D)

145,039

39.9%

Romney (R)

210,610

57.9%

All others

8,166

2.2%

Margin

R+18.0

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2012 presidential election

South Dakota, 2012

RomneyR+18.0

How it voted

Share of the 2012 vote

Mitt Romney ✓Republican	57.9%	210,610
Barack ObamaDemocratic	39.9%	145,039
OtherAll other candidates	2.2%	8,166

D+60

R+60

66 counties, each filled by 2012 D-vs-R margin. Hover any county for its result.

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South Dakota's presidential margins

1892–2024, the 2012 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 — 2012

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

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County	Won	Margin	Democratic	Republican	Total
Aurora County	R	−17.7%	556	804	1,400
Beadle County	R	−18.6%	2,881	4,230	7,263
Bennett County	R	−6.5%	548	626	1,203
Bon Homme County	R	−21.6%	1,167	1,830	3,074
Brookings County	R	−3.2%	5,827	6,220	12,400
Brown County	R	−6.7%	7,250	8,321	16,068
Brule County	R	−28.4%	824	1,499	2,379
Buffalo County	D	+47.7%	472	166	641
Butte County	R	−49.2%	1,002	3,073	4,208
Campbell County	R	−58.8%	153	616	787
Charles Mix County	R	−19.8%	1,483	2,230	3,764
Clark County	R	−19.4%	713	1,067	1,821
Clay County	D	+15.4%	2,955	2,147	5,234
Codington County	R	−18.3%	4,588	6,696	11,524
Corson County	D	+11.1%	648	515	1,200
Custer County	R	−38.2%	1,335	3,062	4,520
Davison County	R	−21.5%	3,042	4,757	7,971
Day County	D	+6.2%	1,497	1,320	2,873
Deuel County	R	−10.8%	941	1,175	2,171
Dewey County	D	+28.7%	1,207	663	1,895
Douglas County	R	−59.3%	332	1,334	1,690
Edmunds County	R	−33.2%	622	1,264	1,936
Fall River County	R	−31.8%	1,140	2,258	3,516
Faulk County	R	−38.5%	331	765	1,127
Grant County	R	−15.0%	1,493	2,034	3,606
Gregory County	R	−42.2%	599	1,507	2,151
Haakon County	R	−73.4%	138	940	1,092
Hamlin County	R	−31.6%	921	1,803	2,793
Hand County	R	−36.1%	575	1,242	1,848
Hanson County	R	−35.9%	760	1,627	2,416
Harding County	R	−75.2%	82	638	739
Hughes County	R	−29.8%	2,786	5,219	8,155
Hutchinson County	R	−44.6%	923	2,451	3,425
Hyde County	R	−46.7%	189	531	733
Jackson County	R	−21.2%	426	661	1,106
Jerauld County	R	−8.5%	452	538	1,006
Jones County	R	−62.7%	108	490	609
Kingsbury County	R	−13.8%	1,092	1,451	2,608
Lake County	R	−11.1%	2,724	3,419	6,285
Lawrence County	R	−26.9%	3,973	7,025	11,359
Lincoln County	R	−25.6%	7,982	13,611	21,952
Lyman County	R	−20.9%	605	933	1,569
Marshall County	D	+8.7%	1,061	889	1,987
McCook County	R	−28.7%	905	1,655	2,613
McPherson County	R	−53.4%	272	921	1,215
Meade County	R	−42.9%	2,928	7,566	10,817
Mellette County	R	−0.8%	375	381	769
Miner County	R	−13.8%	479	636	1,140
Minnehaha County	R	−7.4%	34,674	40,342	76,583
Moody County	R	−3.5%	1,429	1,535	3,033
Oglala Lakota County	D	+87.4%	2,937	188	3,145
Pennington County	R	−29.5%	15,125	28,232	44,464
Perkins County	R	−55.7%	319	1,205	1,590
Potter County	R	−50.0%	339	1,029	1,381
Roberts County	D	+9.8%	2,302	1,883	4,256
Sanborn County	R	−26.8%	389	688	1,115
Spink County	R	−12.2%	1,300	1,670	3,041
Stanley County	R	−40.8%	435	1,063	1,540
Sully County	R	−52.2%	186	613	818
Todd County	D	+59.2%	1,976	498	2,497
Tripp County	R	−43.4%	737	1,905	2,691
Turner County	R	−31.0%	1,411	2,715	4,210
Union County	R	−25.2%	2,782	4,698	7,596
Walworth County	R	−43.1%	671	1,731	2,462
Yankton County	R	−12.7%	4,226	5,495	9,974
Ziebach County	D	+16.4%	439	314	761