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United States · Election results history · 1920 Senate · South Dakota
Election 1920 Results

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1920 US Senate election in South Dakota

Peter Norbeck (Republican) beat Tom Ayres (independent) in South Dakota in 1920, 50.1% to 24.1%, a margin of 26.0 points and 47,958 votes.

South Dakota changed party: in 1914 it went Democratic, for Edwin S. Johnson.

Republicans led in 57 of the 64 counties as they stood then and other candidates in 7. The largest, Minnehaha, cast 13,051 votes and went to the Republican by 31.4 points. The closest was Edmunds, where 40 votes separated the top two.

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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
Peter Norbeck won Republican 92,267 50.1%
Tom Ayres Independent 44,309 24.1%
U.S.G. Cherry Democratic 36,833 20.0%
All other candidates 10,770 5.8%
Total184,179

Every county

CountyDemocratRepublicanOthersTotalMargin
Minnehaha 2,840 21.8% 6,940 53.2% 3,271 13,051 R+31.4
Brown 1,471 14.5% 5,074 50.1% 3,574 10,119 R+35.6
Beadle 850 16.4% 1,951 37.5% 2,395 5,196 Others
Davison 1,032 21.2% 2,146 44.0% 1,698 4,876 R+22.8
Roberts 392 8.3% 2,007 42.7% 2,303 4,702 Others
Day 482 10.4% 2,438 52.6% 1,716 4,636 R+42.2
Spink 901 19.5% 2,446 52.9% 1,279 4,626 R+33.4
Codington 955 20.8% 2,169 47.1% 1,478 4,602 R+26.4
Lawrence 1,197 27.3% 2,859 65.2% 331 4,387 R+37.9
Yankton 1,048 25.2% 2,138 51.5% 969 4,155 R+26.2
Charles Mix 1,290 31.5% 1,684 41.1% 1,126 4,100 R+9.6
Turner 687 16.9% 2,140 52.6% 1,239 4,066 R+35.7
Brookings 654 16.2% 2,460 60.8% 933 4,047 R+44.6
Pennington 1,112 27.7% 2,468 61.4% 438 4,018 R+33.7
Lincoln 470 12.2% 2,307 59.8% 1,080 3,857 R+47.6
Hutchinson 355 9.8% 739 20.5% 2,517 3,611 Others
Bon Homme 1,097 30.7% 1,335 37.3% 1,143 3,575 R+6.7
Lake 415 12.5% 1,997 60.1% 910 3,322 R+47.6
Kingsbury 512 15.6% 2,044 62.1% 734 3,290 R+46.6
Gregory 821 25.2% 1,538 47.2% 897 3,256 R+22.0
Butte 679 21.1% 1,633 50.7% 906 3,218 R+29.6
Meade 890 27.7% 1,642 51.2% 676 3,208 R+23.4
McCook 585 19.0% 1,319 42.8% 1,178 3,082 R+23.8
Clay 905 29.4% 1,703 55.3% 469 3,077 R+25.9
Clark 496 16.3% 1,476 48.5% 1,074 3,046 R+32.2
Grant 387 12.7% 1,445 47.5% 1,211 3,043 R+34.8
Tripp 920 30.5% 1,690 55.9% 411 3,021 R+25.5
Union 828 28.2% 1,754 59.7% 357 2,939 R+31.5
Marshall 265 9.4% 1,387 49.0% 1,179 2,831 R+39.6
Moody 456 16.8% 1,427 52.7% 827 2,710 R+35.8
Hand 677 26.4% 1,355 52.8% 533 2,565 R+26.4
Miner 596 23.5% 1,152 45.5% 783 2,531 R+22.0
Edmunds 366 15.1% 1,048 43.3% 1,008 2,422 R+28.2
Corson 488 20.3% 1,240 51.7% 672 2,400 R+31.3
Walworth 428 18.2% 1,004 42.8% 916 2,348 R+24.5
Deuel 199 8.8% 1,303 57.4% 767 2,269 R+48.7
Sanborn 467 20.8% 823 36.6% 958 2,248 Others
Perkins 391 17.6% 1,172 52.6% 664 2,227 R+35.1
Faulk 402 19.0% 1,036 48.9% 679 2,117 R+29.9
Hamlin 343 16.5% 1,082 52.0% 655 2,080 R+35.5
Fall River 673 32.5% 1,212 58.5% 187 2,072 R+26.0
Brule 586 28.3% 867 41.9% 617 2,070 R+13.6
Aurora 446 21.9% 754 37.0% 840 2,040 Others
McPherson 140 7.1% 601 30.5% 1,228 1,969 Others
Douglas 377 19.2% 894 45.5% 693 1,964 R+26.3
Hughes 489 25.3% 1,090 56.3% 357 1,936 R+31.0
Hanson 393 20.4% 676 35.2% 853 1,922 Others
Lyman 455 24.9% 989 54.1% 383 1,827 R+29.2
Jerauld 313 17.2% 945 51.8% 567 1,825 R+34.6
Campbell 80 5.0% 827 51.6% 697 1,604 R+46.6
Potter 348 22.9% 813 53.4% 361 1,522 R+30.6
Haakon 362 24.6% 719 48.9% 388 1,469 R+24.3
Dewey 333 23.4% 788 55.3% 303 1,424 R+32.0
Custer 391 30.1% 720 55.5% 187 1,298 R+25.3
Harding 158 14.2% 617 55.3% 341 1,116 R+41.1
Stanley 370 35.7% 553 53.3% 114 1,037 R+17.6
Hyde 235 22.9% 634 61.7% 158 1,027 R+38.9
Jones 267 27.3% 530 54.2% 181 978 R+26.9
Sully 145 16.6% 426 48.9% 300 871 R+32.3
Jackson 208 24.5% 580 68.4% 60 848 R+43.9
Mellette 249 29.5% 524 62.0% 72 845 R+32.5
Ziebach 163 20.0% 485 59.4% 168 816 R+39.5
Bennett 191 39.9% 263 54.9% 25 479 R+15.0
Buffalo 112 32.4% 189 54.6% 45 346 R+22.3

Counties as they stood in 1920; 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