Election 1986 Results
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1986 US Senate election in South Dakota
Thomas A. Daschle (Democrat) beat James Abdnor (Republican) in South Dakota in 1986, 51.6% to 48.4%, a margin of 3.2 points and 9,484 votes.
South Dakota changed party: in 1980 it went Republican, for James Abdnor.
Democrats led in 37 of the 66 counties as they stood then and Republicans in 29. The largest, Minnehaha, cast 48,590 votes and went to the Democrat by 10.9 points. The closest was Mellette, where 7 votes separated the two parties.
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
| Candidate | Party | Votes | Share |
|---|---|---|---|
| Thomas A. Daschle won | Democratic | 152,657 | 51.6% |
| James Abdnor | Republican | 143,173 | 48.4% |
| Total | 295,830 |
Every county
| County | Democrat | Republican | Others | Total | Margin |
|---|---|---|---|---|---|
| Minnehaha | 26,942 55.4% | 21,648 44.6% | 48,590 | D+10.9 | |
| Pennington | 12,114 45.6% | 14,466 54.4% | 26,580 | R+8.8 | |
| Brown | 9,503 58.0% | 6,890 42.0% | 16,393 | D+15.9 | |
| Brookings | 4,626 49.1% | 4,792 50.9% | 9,418 | R+1.8 | |
| Codington | 4,954 54.9% | 4,067 45.1% | 9,021 | D+9.8 | |
| Beadle | 4,592 52.1% | 4,222 47.9% | 8,814 | D+4.2 | |
| Lawrence | 3,622 46.8% | 4,124 53.2% | 7,746 | R+6.5 | |
| Yankton | 3,915 52.1% | 3,593 47.9% | 7,508 | D+4.3 | |
| Davison | 3,740 50.2% | 3,716 49.8% | 7,456 | D+0.3 | |
| Hughes | 2,797 39.2% | 4,334 60.8% | 7,131 | R+21.6 | |
| Meade | 3,155 46.5% | 3,625 53.5% | 6,780 | R+6.9 | |
| Lincoln | 3,367 54.8% | 2,776 45.2% | 6,143 | D+9.6 | |
| Lake | 2,958 55.7% | 2,351 44.3% | 5,309 | D+11.4 | |
| Clay | 2,756 57.4% | 2,044 42.6% | 4,800 | D+14.8 | |
| Charles Mix | 2,473 55.1% | 2,013 44.9% | 4,486 | D+10.3 | |
| Turner | 2,097 48.4% | 2,232 51.6% | 4,329 | R+3.1 | |
| Hutchinson | 1,781 41.2% | 2,545 58.8% | 4,326 | R+17.7 | |
| Union | 2,639 61.3% | 1,668 38.7% | 4,307 | D+22.5 | |
| Roberts | 2,534 59.7% | 1,711 40.3% | 4,245 | D+19.4 | |
| Spink | 2,205 54.0% | 1,879 46.0% | 4,084 | D+8.0 | |
| Grant | 2,153 52.8% | 1,922 47.2% | 4,075 | D+5.7 | |
| Day | 2,317 60.0% | 1,544 40.0% | 3,861 | D+20.0 | |
| Bon Homme | 1,927 51.3% | 1,833 48.8% | 3,760 | D+2.5 | |
| Tripp | 1,427 41.4% | 2,017 58.6% | 3,444 | R+17.1 | |
| Butte | 1,302 38.8% | 2,057 61.2% | 3,359 | R+22.5 | |
| Kingsbury | 1,727 52.6% | 1,555 47.4% | 3,282 | D+5.2 | |
| Fall River | 1,549 48.8% | 1,625 51.2% | 3,174 | R+2.4 | |
| Moody | 1,843 61.8% | 1,141 38.2% | 2,984 | D+23.5 | |
| Walworth | 1,268 42.5% | 1,716 57.5% | 2,984 | R+15.0 | |
| Custer | 1,332 44.9% | 1,635 55.1% | 2,967 | R+10.2 | |
| McCook | 1,640 55.8% | 1,301 44.2% | 2,941 | D+11.5 | |
| Gregory | 1,291 47.0% | 1,453 53.0% | 2,744 | R+5.9 | |
| Hand | 1,309 49.0% | 1,364 51.0% | 2,673 | R+2.1 | |
| Edmunds | 1,468 56.1% | 1,149 43.9% | 2,617 | D+12.2 | |
| Deuel | 1,515 58.4% | 1,079 41.6% | 2,594 | D+16.8 | |
| Marshall | 1,541 59.7% | 1,041 40.3% | 2,582 | D+19.4 | |
| Hamlin | 1,353 52.6% | 1,219 47.4% | 2,572 | D+5.2 | |
| Brule | 1,297 50.8% | 1,257 49.2% | 2,554 | D+1.6 | |
| Clark | 1,345 54.0% | 1,147 46.0% | 2,492 | D+7.9 | |
| Perkins | 1,080 48.3% | 1,155 51.7% | 2,235 | R+3.4 | |
| Douglas | 770 37.2% | 1,300 62.8% | 2,070 | R+25.6 | |
| Dewey | 1,286 62.9% | 758 37.1% | 2,044 | D+25.8 | |
| McPherson | 696 36.0% | 1,235 64.0% | 1,931 | R+27.9 | |
| Miner | 1,095 57.7% | 804 42.3% | 1,899 | D+15.3 | |
| Todd | 1,321 69.9% | 568 30.1% | 1,889 | D+39.9 | |
| Potter | 755 40.1% | 1,127 59.9% | 1,882 | R+19.8 | |
| Shannon | 1,658 88.2% | 221 11.8% | 1,879 | D+76.5 | |
| Aurora | 1,000 55.2% | 812 44.8% | 1,812 | D+10.4 | |
| Lyman | 607 35.2% | 1,118 64.8% | 1,725 | R+29.6 | |
| Sanborn | 884 51.3% | 839 48.7% | 1,723 | D+2.6 | |
| Corson | 977 58.7% | 688 41.3% | 1,665 | D+17.4 | |
| Faulk | 834 50.8% | 807 49.2% | 1,641 | D+1.6 | |
| Hanson | 790 50.7% | 768 49.3% | 1,558 | D+1.4 | |
| Jerauld | 753 49.5% | 769 50.5% | 1,522 | R+1.1 | |
| Bennett | 818 55.4% | 659 44.6% | 1,477 | D+10.8 | |
| Campbell | 540 39.6% | 825 60.4% | 1,365 | R+20.9 | |
| Haakon | 370 27.5% | 977 72.5% | 1,347 | R+45.1 | |
| Stanley | 515 39.0% | 806 61.0% | 1,321 | R+22.0 | |
| Jackson | 499 41.2% | 711 58.8% | 1,210 | R+17.5 | |
| Sully | 508 45.2% | 615 54.8% | 1,123 | R+9.5 | |
| Hyde | 492 44.1% | 623 55.9% | 1,115 | R+11.7 | |
| Mellette | 490 49.6% | 497 50.4% | 987 | R+0.7 | |
| Harding | 337 36.9% | 576 63.1% | 913 | R+26.2 | |
| Jones | 245 29.4% | 589 70.6% | 834 | R+41.2 | |
| Ziebach | 430 55.0% | 352 45.0% | 782 | D+10.0 | |
| Buffalo | 533 70.5% | 223 29.5% | 756 | D+41.0 |
Counties as they stood in 1986; 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
| Year | Winner | Margin |
|---|---|---|
| 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 |