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United States · Election results history · 1984 president · South Dakota
Election 1984 Results

Each election opens in its own mode: the forecast before the votes are counted, the live count while races are still too close to call, and the results once every race is decided.

1984 presidential election in South Dakota

Ronald Reagan (Republican) beat Walter Mondale (Democrat) in South Dakota in 1984, 63.0% to 36.5%, a margin of 26.5 points and 84,154 votes.

South Dakota voted 8.2 points more Republican than the country as a whole, where the margin was R+18.2.

The Republican hold continued from 1980, when Ronald Reagan also won.

Republicans led in 64 of the 66 counties as they stood then and Democrats in 2. The largest, Minnehaha, cast 53,171 votes and went to the Republican by 12.9 points. The closest was Buffalo, where 17 votes separated the two parties.

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Early projection, based on early and incomplete polling: the likely matchups, each weighted by the betting markets' odds of both nominations, not a result. Each county is its 2024 presidential margin moved by its state's projected swing; set a national vote and every state, district and county moves by the same amount from our projection. Colours run in 100 steps from a safe Republican to a safe Democratic margin. Boundaries: US Census Bureau.

Result

CandidatePartyVotesShare
Ronald Reagan won Republican 200,267 63.0%
Walter Mondale Democratic 116,113 36.5%
All other candidates 1,487 0.5%
Total317,867

Every county

CountyDemocratRepublicanOthersTotalMargin
Minnehaha 23,042 43.3% 29,908 56.2% 221 53,171 R+12.9
Pennington 8,224 27.1% 21,947 72.2% 218 30,389 R+45.2
Brown 6,852 39.2% 10,541 60.4% 72 17,465 R+21.1
Brookings 4,089 37.8% 6,679 61.8% 46 10,814 R+24.0
Codington 3,528 36.5% 6,108 63.1% 42 9,678 R+26.7
Beadle 3,523 37.4% 5,876 62.4% 23 9,422 R+25.0
Lawrence 2,565 29.9% 5,949 69.4% 55 8,569 R+39.5
Yankton 2,932 36.0% 5,161 63.4% 52 8,145 R+27.4
Davison 3,248 40.4% 4,783 59.4% 17 8,048 R+19.1
Meade 2,093 26.0% 5,908 73.5% 40 8,041 R+47.4
Hughes 2,072 29.2% 4,985 70.3% 32 7,089 R+41.1
Lincoln 2,626 39.6% 3,988 60.1% 22 6,636 R+20.5
Clay 2,711 46.7% 3,057 52.6% 40 5,808 R+6.0
Lake 2,367 43.7% 3,027 55.9% 19 5,413 R+12.2
Roberts 2,063 42.6% 2,767 57.2% 10 4,840 R+14.5
Union 2,221 47.5% 2,431 52.0% 25 4,677 R+4.5
Hutchinson 1,237 26.8% 3,372 72.9% 15 4,624 R+46.2
Turner 1,486 32.4% 3,086 67.2% 20 4,592 R+34.8
Charles Mix 1,879 41.2% 2,660 58.3% 24 4,563 R+17.1
Grant 1,606 36.8% 2,738 62.8% 16 4,360 R+26.0
Spink 1,680 38.9% 2,627 60.8% 17 4,324 R+21.9
Day 1,932 47.1% 2,150 52.4% 19 4,101 R+5.3
Bon Homme 1,408 36.0% 2,478 63.4% 20 3,906 R+27.4
Fall River 1,135 29.1% 2,748 70.4% 22 3,905 R+41.3
Butte 784 21.4% 2,865 78.1% 18 3,667 R+56.7
Tripp 935 27.2% 2,483 72.2% 22 3,440 R+45.0
Kingsbury 1,249 36.9% 2,121 62.7% 13 3,383 R+25.8
McCook 1,448 43.1% 1,902 56.6% 12 3,362 R+13.5
Moody 1,586 49.1% 1,633 50.6% 9 3,228 R+1.5
Walworth 779 24.4% 2,396 75.0% 19 3,194 R+50.6
Custer 858 28.0% 2,183 71.3% 22 3,063 R+43.3
Hand 846 29.3% 2,030 70.3% 10 2,886 R+41.0
Hamlin 963 34.9% 1,782 64.5% 16 2,761 R+29.7
Clark 960 35.3% 1,748 64.3% 10 2,718 R+29.0
Marshall 1,111 41.9% 1,529 57.7% 9 2,649 R+15.8
Edmunds 1,007 39.2% 1,553 60.4% 10 2,570 R+21.2
Gregory 780 30.4% 1,777 69.2% 12 2,569 R+38.8
Brule 961 37.6% 1,578 61.7% 17 2,556 R+24.1
Deuel 941 37.8% 1,537 61.7% 12 2,490 R+23.9
Perkins 714 29.6% 1,686 69.9% 11 2,411 R+40.3
Douglas 536 23.8% 1,713 76.0% 5 2,254 R+52.2
McPherson 418 18.7% 1,813 81.1% 5 2,236 R+62.4
Potter 482 23.7% 1,551 76.2% 2 2,035 R+52.5
Miner 960 48.6% 1,004 50.8% 13 1,977 R+2.2
Aurora 840 44.6% 1,029 54.6% 14 1,883 R+10.0
Shannon 1,489 81.4% 324 17.7% 16 1,829 D+63.7
Corson 792 45.2% 955 54.5% 6 1,753 R+9.3
Dewey 772 44.7% 941 54.5% 14 1,727 R+9.8
Todd 1,022 59.6% 679 39.6% 13 1,714 D+20.0
Faulk 579 33.9% 1,124 65.9% 3 1,706 R+31.9
Sanborn 611 36.0% 1,080 63.7% 4 1,695 R+27.7
Lyman 478 29.8% 1,120 69.8% 7 1,605 R+40.0
Jerauld 542 34.7% 1,012 64.8% 8 1,562 R+30.1
Hanson 625 40.8% 898 58.7% 7 1,530 R+17.8
Haakon 237 16.8% 1,168 82.8% 5 1,410 R+66.0
Bennett 453 34.4% 856 65.0% 7 1,316 R+30.6
Stanley 351 27.0% 942 72.5% 6 1,299 R+45.5
Jackson 365 28.6% 903 70.8% 7 1,275 R+42.2
Campbell 214 17.1% 1,035 82.5% 6 1,255 R+65.4
Hyde 350 30.5% 797 69.4% 1 1,148 R+38.9
Sully 266 24.0% 836 75.5% 5 1,107 R+51.5
Mellette 303 32.7% 616 66.5% 8 927 R+33.8
Harding 186 20.4% 723 79.3% 3 912 R+58.9
Jones 206 22.9% 689 76.6% 4 899 R+53.7
Ziebach 359 45.3% 429 54.2% 4 792 R+8.8
Buffalo 236 47.8% 253 51.2% 5 494 R+3.4

Counties as they stood in 1984; some have since been split, merged or renamed. Margin: the Democrat's share of all votes minus the Republican's. Sources and how the results were checked.

South Dakota in every presidential election we hold

YearWinnerMargin
2024 Donald Trump (R) R+29.2
2020 Donald Trump (R) R+26.2
2016 Donald Trump (R) R+29.8
2012 Mitt Romney (R) R+18.0
2008 John McCain (R) R+8.4
2004 George W. Bush (R) R+21.5
2000 George W. Bush (R) R+22.7
1996 Bob Dole (R) R+3.5
1992 George H. W. Bush (R) R+3.5
1988 George H. W. Bush (R) R+6.3
1984 Ronald Reagan (R) R+26.5
1980 Ronald Reagan (R) R+28.8
1976 Gerald Ford (R) R+1.5
1972 Richard Nixon (R) R+8.6
1968 Richard Nixon (R) R+11.3
1964 Lyndon B. Johnson (D) D+11.2
1960 Richard Nixon (R) R+16.4
1956 Dwight D. Eisenhower (R) R+16.8
1952 Dwight D. Eisenhower (R) R+38.5
1948 Thomas E. Dewey (R) R+4.8
1944 Thomas E. Dewey (R) R+16.7
1940 Wendell Willkie (R) R+14.8
1936 Franklin D. Roosevelt (D) D+11.5
1932 Franklin D. Roosevelt (D) D+29.2
1928 Herbert Hoover (R) R+21.0
1924 Calvin Coolidge (R) R+36.3
1920 Warren G. Harding (R) R+41.0
1916 Charles Evans Hughes (R) R+3.9
1912 Theodore Roosevelt (other)
1908 William Howard Taft (R) R+23.8
1904 Theodore Roosevelt (R) R+49.4
1900 William McKinley (R) R+15.6
1896 William Jennings Bryan (D) D+0.2
1892 Benjamin Harrison (R) R+36.6