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United States · Election results history · 1918 Senate · South Dakota
Election 1918 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.

1918 US Senate election in South Dakota

Thomas Sterling (Republican) beat Orville V. Rinehart (Democrat) in South Dakota in 1918, 55.1% to 38.9%, a margin of 16.1 points and 14,988 votes.

Republicans led in 54 of the 64 counties as they stood then and Democrats in 10. The largest, Minnehaha, cast 5,741 votes and went to the Republican by 36.9 points. The closest was Butte, where 6 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.

Senate

CandidatePartyVotesShare
Thomas Sterling won Republican 51,198 55.1%
Orville V. Rinehart Democratic 36,210 38.9%
W. T. Rafferty Independent 5,560 6.0%
Total92,968

Every county

CountyDemocratRepublicanOthersTotalMargin
Minnehaha 1,747 30.4% 3,863 67.3% 131 5,741 R+36.9
Brown 1,762 41.4% 2,211 51.9% 286 4,259 R+10.5
Spink 755 30.0% 1,591 63.3% 169 2,515 R+33.2
Lawrence 710 28.5% 1,478 59.4% 302 2,490 R+30.8
Charles Mix 1,311 53.5% 1,025 41.8% 114 2,450 D+11.7
Codington 946 40.0% 1,291 54.6% 129 2,366 R+14.6
Beadle 926 39.7% 1,313 56.4% 91 2,330 R+16.6
Brookings 575 25.9% 1,514 68.2% 132 2,221 R+42.3
Day 871 39.3% 1,227 55.4% 118 2,216 R+16.1
Roberts 963 43.8% 1,041 47.4% 193 2,197 R+3.6
Turner 939 43.7% 1,124 52.3% 86 2,149 R+8.6
Davison 756 35.5% 1,183 55.5% 192 2,131 R+20.0
Yankton 807 39.9% 1,145 56.6% 72 2,024 R+16.7
Gregory 813 41.2% 1,063 53.9% 98 1,974 R+12.7
Bon Homme 876 45.2% 996 51.3% 68 1,940 R+6.2
Tripp 868 44.9% 992 51.3% 75 1,935 R+6.4
Lincoln 513 26.7% 1,251 65.1% 158 1,922 R+38.4
Clark 611 32.8% 1,107 59.4% 146 1,864 R+26.6
Hutchinson 1,396 75.1% 385 20.7% 77 1,858 D+54.4
Lake 514 28.3% 1,167 64.3% 134 1,815 R+36.0
Pennington 919 50.7% 857 47.3% 37 1,813 D+3.4
Meade 764 47.6% 757 47.1% 85 1,606 D+0.4
Kingsbury 436 27.3% 1,093 68.4% 68 1,597 R+41.1
McCook 635 40.5% 812 51.8% 120 1,567 R+11.3
Grant 586 37.5% 818 52.4% 158 1,562 R+14.9
Union 577 37.6% 888 57.9% 69 1,534 R+20.3
Clay 451 30.1% 956 63.9% 90 1,497 R+33.7
Marshall 488 34.1% 812 56.8% 129 1,429 R+22.7
Butte 650 46.7% 656 47.1% 87 1,393 R+0.4
Moody 465 33.7% 812 58.9% 102 1,379 R+25.2
Sanborn 645 47.1% 604 44.1% 120 1,369 D+3.0
Brule 541 42.2% 680 53.0% 62 1,283 R+10.8
Aurora 572 44.8% 539 42.2% 166 1,277 D+2.6
Hand 603 47.9% 633 50.3% 22 1,258 R+2.4
Miner 484 38.8% 681 54.6% 83 1,248 R+15.8
Hamlin 340 27.3% 823 66.1% 82 1,245 R+38.8
Deuel 300 25.1% 796 66.5% 101 1,197 R+41.4
Perkins 456 38.9% 629 53.7% 87 1,172 R+14.8
Hanson 553 49.9% 491 44.3% 64 1,108 D+5.6
Lyman 404 36.6% 650 58.9% 49 1,103 R+22.3
Douglas 502 46.7% 532 49.4% 42 1,076 R+2.8
Walworth 430 40.3% 530 49.7% 107 1,067 R+9.4
Faulk 367 34.6% 655 61.8% 38 1,060 R+27.2
Jerauld 380 36.0% 590 55.9% 86 1,056 R+19.9
Fall River 478 46.0% 553 53.2% 9 1,040 R+7.2
Hughes 270 28.3% 643 67.3% 42 955 R+39.1
Edmunds 392 41.4% 442 46.7% 112 946 R+5.3
Haakon 344 39.3% 504 57.5% 28 876 R+18.3
McPherson 383 50.1% 240 31.4% 142 765 D+18.7
Custer 332 44.4% 415 55.6% 747 R+11.1
Potter 249 33.6% 439 59.2% 54 742 R+25.6
Harding 264 35.9% 413 56.1% 59 736 R+20.2
Corson 301 41.6% 362 50.0% 61 724 R+8.4
Dewey 258 37.9% 394 57.9% 29 681 R+20.0
Stanley 252 42.9% 324 55.1% 12 588 R+12.2
Campbell 282 49.6% 250 44.0% 36 568 D+5.6
Hyde 125 24.5% 366 71.6% 20 511 R+47.2
Mellette 238 46.6% 268 52.4% 5 511 R+5.9
Jones 181 37.0% 278 56.9% 30 489 R+19.8
Ziebach 158 32.3% 311 63.6% 20 489 R+31.3
Sully 148 32.3% 249 54.4% 61 458 R+22.1
Jackson 132 32.5% 266 65.5% 8 406 R+33.0
Buffalo 104 38.2% 163 59.9% 5 272 R+21.7
Bennett 112 65.5% 57 33.3% 2 171 D+32.2

Counties as they stood in 1918; 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 Senate elections we hold

YearWinnerMargin
2022 John R Thune (R) R+43.5
2020 Mike Rounds (R) R+31.5
2016 John R. Thune (R) R+43.7
2014 Mike Rounds (R) R+20.9
2010 John Thune (R) R+100.0
2008 Tim Johnson (D) D+25.0
2004 John Thune (R) R+1.2
2002 Tim Johnson (D) D+0.2
1998 Tom Daschle (D) D+25.7
1996 Tim Johnson (D) D+2.6
1992 Thomas A. Daschle (D) D+32.4
1990 Larry Pressler (R) R+7.3
1986 Thomas A. Daschle (D) D+3.2
1984 Larry Pressler (R) R+49.0
1980 James Abdnor (R) R+18.8
1978 Larry Pressler (R) R+33.7
1974 George McGovern (D) D+6.1
1972 James Abourezk (D) D+14.1
1968 George McGovern (D) D+13.6
1966 Karl E. Mundt (R) R+32.6
1962 George McGovern (D) D+0.2
1960 Karl E. Mundt (R) R+4.9
1956 Francis Case (R) R+1.6
1954 Karl E. Mundt (R) R+14.6
1950 Francis Case (R) R+27.8
1948 Karl E. Mundt (R) R+18.7
1944 Chandler Gurney (R) R+27.7
1942 Harlan J. Bushfield (R) R+17.5
1938 Chandler Gurney (R) R+4.9
1936 William J. Bulow (D) D+2.1
1932 Peter Norbeck (R) R+9.3
1930 William J. Bulow (D) D+3.3
1926 Peter Norbeck (R) R+26.2
1924 William H. McMaster (R) R+13.3
1920 Peter Norbeck (R) R+30.1
1918 Thomas Sterling (R) R+16.1
1914 Edwin S. Johnson (D) D+3.5