akashic
1876–2024
Elections / 1940 · President · SD

Wendell Willkie carried South Dakota R+14.8.

Franklin D. Roosevelt (D) vs Wendell Willkie (R) in South Dakota, 1940. The state ran 24.8 points more Republican than the nation (D+9.9 nationally).

Nominees: Franklin D. Roosevelt (D) · Wendell Willkie (R)

South Dakota result
308,427 votes counted
Roosevelt (D)
131,362
42.6%
Willkie (R)
177,065
57.4%
All others
0
0.0%
Margin
R+14.8
1940 presidential election
South Dakota, 1940
WillkieR+14.8
1940 presidential margin by county for South Dakota — 1940 presidential electionA map of the constituent counties of South Dakota — 1940 presidential election, each outlined and filled by its 1940 presidential margin from deep red (Republican) through neutral to deep blue (Democratic), seated within the faint outlines of the surrounding states.Aurora County, SD · R+0.8Beadle County, SD · D+9.3Bennett County, SD · R+3.1Bon Homme County, SD · R+10.6Brookings County, SD · R+30.5Brown County, SD · D+9.9Brule County, SD · D+15.2Buffalo County, SD · R+10.8Butte County, SD · R+22.0Campbell County, SD · R+61.3Charles Mix County, SD · D+4.9Clark County, SD · R+23.5Clay County, SD · R+4.2Codington County, SD · R+7.7Corson County, SD · R+12.5Custer County, SD · R+21.9Davison County, SD · D+7.2Day County, SD · TiedDeuel County, SD · R+32.8Dewey County, SD · R+12.7Douglas County, SD · R+31.1Edmunds County, SD · R+23.7Fall River County, SD · R+26.5Faulk County, SD · R+8.8Grant County, SD · R+18.8Gregory County, SD · R+9.8Haakon County, SD · R+23.0Hamlin County, SD · R+28.0Hand County, SD · R+10.9Hanson County, SD · R+7.3Harding County, SD · R+6.0Hughes County, SD · R+18.5Hutchinson County, SD · R+64.2Hyde County, SD · R+20.6Jackson County, SD · R+9.5Jerauld County, SD · R+26.3Jones County, SD · R+24.2Kingsbury County, SD · R+40.5Lake County, SD · R+37.7Lawrence County, SD · R+20.1Lincoln County, SD · R+33.2Lyman County, SD · R+12.1Marshall County, SD · TiedMcCook County, SD · R+32.2McPherson County, SD · R+54.9Meade County, SD · R+14.0Mellette County, SD · R+4.5Miner County, SD · R+21.1Minnehaha County, SD · R+15.2Moody County, SD · R+20.3Oglala Lakota County, SD · R+13.3Pennington County, SD · R+15.0Perkins County, SD · R+14.7Potter County, SD · R+9.6Roberts County, SD · D+3.4Sanborn County, SD · R+10.7Spink County, SD · D+2.6Stanley County, SD · R+11.3Sully County, SD · R+29.4Todd County, SD · TiedTripp County, SD · R+8.8Turner County, SD · R+44.7Union County, SD · R+8.9Walworth County, SD · R+10.2Yankton County, SD · R+15.4Ziebach County, SD · Tied
How it voted
Share of the 1940 vote
Wendell Willkie ✓Republican57.4%177,065
Franklin D. RooseveltDemocratic42.6%131,362
OtherAll other candidates0.0%0
D+60
R+60
66 counties, each filled by 1940 D-vs-R margin. Hover any county for its result.
South Dakota's presidential margins
1892–2024, the 1940 contest in context
South Dakota's presidential marginsDemocratic-minus-Republican presidential margin from 1892 to 2024. Most recent: −29.2% in 2024.flipped R · 2004−29.2%DR18922024
South Dakota's presidential margins
YearMargin (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%
County results — 1940
66 counties; every row links to the county's full page.
CountyWonMarginDemocraticRepublicanTotal
Aurora CountyR
−0.8%
1,3851,4082,793
Beadle CountyD
+9.3%
5,2534,3569,609
Bennett CountyR
−3.1%
8609151,775
Bon Homme CountyR
−10.6%
2,4633,0465,509
Brookings CountyR
−30.5%
2,6715,0167,687
Brown CountyD
+9.9%
8,0486,59814,646
Brule CountyD
+15.2%
1,8351,3523,187
Buffalo CountyR
−10.8%
395491886
Butte CountyR
−22.0%
1,3842,1643,548
Campbell CountyR
−61.3%
4161,7332,149
Charles Mix CountyD
+4.9%
3,3032,9936,296
Clark CountyR
−23.5%
1,6242,6224,246
Clay CountyR
−4.2%
2,2662,4634,729
Codington CountyR
−7.7%
3,7054,3208,025
Corson CountyR
−12.5%
1,3281,7093,037
Custer CountyR
−21.9%
1,1511,7962,947
Davison CountyD
+7.2%
4,2303,6597,889
Day CountyD
+0.3%
3,2973,2776,574
Deuel CountyR
−32.8%
1,1662,3043,470
Dewey CountyR
−12.7%
1,0811,3962,477
Douglas CountyR
−31.1%
1,0401,9773,017
Edmunds CountyR
−23.7%
1,4432,3413,784
Fall River CountyR
−26.5%
1,4052,4203,825
Faulk CountyR
−8.8%
1,1991,4312,630
Grant CountyR
−18.8%
2,0392,9815,020
Gregory CountyR
−9.8%
2,0352,4784,513
Haakon CountyR
−23.0%
7071,1291,836
Hamlin CountyR
−28.0%
1,2822,2793,561
Hand CountyR
−10.9%
1,6082,0023,610
Hanson CountyR
−7.3%
1,2161,4082,624
Harding CountyR
−6.0%
6707551,425
Hughes CountyR
−18.5%
1,3621,9823,344
Hutchinson CountyR
−64.2%
1,1035,0516,154
Hyde CountyR
−20.6%
6701,0181,688
Jackson CountyR
−9.5%
8099781,787
Jerauld CountyR
−26.3%
9191,5762,495
Jones CountyR
−24.2%
5088321,340
Kingsbury CountyR
−40.5%
1,5033,5515,054
Lake CountyR
−37.7%
1,8894,1796,068
Lawrence CountyR
−20.1%
3,5155,2888,803
Lincoln CountyR
−33.2%
2,0484,0816,129
Lyman CountyR
−12.1%
1,1051,4092,514
Marshall CountyR
−0.4%
1,9721,9893,961
McCook CountyR
−32.2%
1,6963,3105,006
McPherson CountyR
−54.9%
8262,8393,665
Meade CountyR
−14.0%
1,9312,5604,491
Mellette CountyR
−4.5%
9059901,895
Miner CountyR
−21.1%
1,3652,0953,460
Minnehaha CountyR
−15.2%
12,25916,66428,923
Moody CountyR
−20.3%
1,8202,7494,569
Oglala Lakota CountyR
−13.3%
1,0931,4292,522
Pennington CountyR
−15.0%
4,8786,60311,481
Perkins CountyR
−14.7%
1,3211,7773,098
Potter CountyR
−9.6%
1,0541,2782,332
Roberts CountyD
+3.4%
3,7503,5047,254
Sanborn CountyR
−10.7%
1,3981,7323,130
Spink CountyD
+2.6%
3,1342,9756,109
Stanley CountyR
−11.3%
5416791,220
Sully CountyR
−29.4%
4588401,298
Todd CountyR
−0.3%
1,2381,2452,483
Tripp CountyR
−8.8%
2,0892,4924,581
Turner CountyR
−44.7%
1,7744,6446,418
Union CountyR
−8.9%
2,6083,1165,724
Walworth CountyR
−10.2%
1,5651,9213,486
Yankton CountyR
−15.4%
3,0644,1797,243
Ziebach CountyR
−0.3%
6876911,378