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United States · Election results history · 1948 president · South Dakota
Election 1948 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.

1948 presidential election in South Dakota

Thomas E. Dewey (Republican) beat Harry S. Truman (Democrat) in South Dakota in 1948, 51.8% to 47.0%, a margin of 4.8 points and 11,998 votes.

South Dakota voted 9.3 points more Republican than the country as a whole, where the margin was D+4.5.

The Republican hold continued from 1944, when Thomas E. Dewey also won.

Republicans led in 40 of the 68 counties as they stood then and Democrats in 26. The largest, Minnehaha, cast 26,125 votes and went to the Republican by 8.7 points. The closest was Potter, where 5 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
Thomas E. Dewey won Republican 129,651 51.8%
Harry S. Truman Democratic 117,653 47.0%
All other candidates 2,801 1.1%
Total250,105

Every county

CountyDemocratRepublicanOthersTotalMargin
Minnehaha 11,770 45.1% 14,047 53.8% 308 26,125 R+8.7
Brown 7,148 55.1% 5,632 43.4% 192 12,972 D+11.7
Pennington 4,929 43.2% 6,392 56.0% 92 11,413 R+12.8
Beadle 4,372 53.9% 3,662 45.1% 77 8,111 D+8.8
Codington 4,042 54.3% 3,349 45.0% 50 7,441 D+9.3
Davison 4,064 57.0% 2,996 42.0% 68 7,128 D+15.0
Brookings 2,907 42.0% 3,975 57.4% 44 6,926 R+15.4
Lawrence 2,209 36.5% 3,778 62.5% 58 6,045 R+26.0
Yankton 2,932 49.8% 2,904 49.3% 57 5,893 D+0.5
Day 3,146 55.4% 2,438 42.9% 97 5,681 D+12.5
Roberts 3,277 58.0% 2,211 39.1% 164 5,652 D+18.9
Spink 2,702 53.3% 2,310 45.6% 55 5,067 D+7.7
Lake 2,093 42.0% 2,837 56.9% 52 4,982 R+14.9
Charles Mix 3,086 62.5% 1,800 36.5% 49 4,935 D+26.1
Lincoln 1,826 39.2% 2,771 59.5% 59 4,656 R+20.3
Turner 1,514 32.9% 3,048 66.3% 38 4,600 R+33.3
Union 2,237 50.1% 2,205 49.4% 23 4,465 D+0.7
Bon Homme 2,077 47.1% 2,283 51.8% 48 4,408 R+4.7
Clay 2,080 47.7% 2,228 51.1% 53 4,361 R+3.4
Hutchinson 1,209 29.1% 2,906 70.0% 36 4,151 R+40.9
Grant 2,052 50.5% 1,972 48.6% 36 4,060 D+2.0
Tripp 1,918 50.2% 1,845 48.3% 55 3,818 D+1.9
Meade 1,681 44.6% 2,053 54.5% 35 3,769 R+9.9
Kingsbury 1,338 35.9% 2,332 62.6% 58 3,728 R+26.7
Gregory 1,793 50.3% 1,723 48.4% 46 3,562 D+2.0
McCook 1,387 40.0% 2,064 59.5% 20 3,471 R+19.5
Fall River 1,348 39.5% 2,037 59.7% 26 3,411 R+20.2
Moody 1,630 48.4% 1,691 50.2% 48 3,369 R+1.8
Clark 1,559 48.5% 1,625 50.6% 28 3,212 R+2.1
Marshall 1,710 53.5% 1,419 44.4% 69 3,198 D+9.1
Walworth 1,513 48.0% 1,607 50.9% 35 3,155 R+3.0
Hamlin 1,326 44.5% 1,608 54.0% 45 2,979 R+9.5
Butte 1,065 37.5% 1,726 60.7% 51 2,842 R+23.3
Hughes 1,080 38.1% 1,739 61.4% 12 2,831 R+23.3
Hand 1,367 49.2% 1,402 50.5% 9 2,778 R+1.3
Edmunds 1,253 45.3% 1,493 54.0% 19 2,765 R+8.7
Brule 1,646 60.0% 1,056 38.5% 42 2,744 D+21.5
Deuel 1,324 48.7% 1,357 49.9% 38 2,719 R+1.2
McPherson 611 22.9% 2,034 76.2% 23 2,668 R+53.3
Miner 1,373 53.1% 1,188 45.9% 26 2,587 D+7.2
Perkins 1,096 42.4% 1,424 55.0% 67 2,587 R+12.7
Aurora 1,275 54.3% 1,056 45.0% 16 2,347 D+9.3
Corson 1,154 49.6% 1,154 49.6% 17 2,325 level
Custer 917 42.7% 1,217 56.7% 14 2,148 R+14.0
Potter 1,039 49.5% 1,044 49.7% 18 2,101 R+0.2
Sanborn 1,046 50.8% 990 48.0% 25 2,061 D+2.7
Faulk 971 47.4% 1,054 51.5% 22 2,047 R+4.1
Douglas 736 36.0% 1,301 63.7% 5 2,042 R+27.7
Jerauld 876 44.1% 1,085 54.6% 26 1,987 R+10.5
Campbell 410 21.1% 1,518 78.0% 17 1,945 R+57.0
Lyman 904 47.3% 993 51.9% 15 1,912 R+4.7
Hanson 953 52.1% 860 47.0% 15 1,828 D+5.1
Dewey 727 45.3% 864 53.8% 15 1,606 R+8.5
Shannon 803 55.2% 641 44.1% 10 1,454 D+11.1
Todd 796 55.4% 625 43.5% 17 1,438 D+11.9
Hyde 553 40.1% 817 59.2% 9 1,379 R+19.1
Haakon 519 39.9% 753 57.9% 28 1,300 R+18.0
Bennett 758 60.5% 477 38.1% 17 1,252 D+22.4
Harding 479 46.1% 529 50.9% 32 1,040 R+4.8
Sully 405 40.8% 579 58.4% 8 992 R+17.5
Ziebach 503 51.3% 463 47.2% 14 980 D+4.1
Mellette 482 49.3% 482 49.3% 13 977 level
Jones 414 43.7% 522 55.1% 12 948 R+11.4
Stanley 359 40.5% 522 58.9% 6 887 R+18.4
Jackson 321 41.9% 432 56.4% 13 766 R+14.5
Buffalo 334 51.2% 313 48.0% 5 652 D+3.2
Washabaugh (Ext) 223 53.2% 192 45.8% 4 419 D+7.4
Armstrong (Ext) 6 85.7% 1 14.3% 7 D+71.4

Counties as they stood in 1948; 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