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United States · Election results history · 1980 Senate · Wisconsin
Election 1980 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.

1980 US Senate election in Wisconsin

Robert W. Kasten Jr. (Republican) beat Gaylord A. Nelson (Democrat) in Wisconsin in 1980, 50.2% to 48.3%, a margin of 1.9 points and 40,824 votes.

Wisconsin changed party: in 1974 it went Democratic, for Gaylord Nelson.

Republicans led in 47 of the 72 counties as they stood then and Democrats in 25. The largest, Milwaukee, cast 458,829 votes and went to the Democrat by 12.7 points. The closest was Crawford, where 10 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
Robert W. Kasten Jr. won Republican 1,106,311 50.2%
Gaylord A. Nelson Democratic 1,065,487 48.3%
All other candidates 32,404 1.5%
Total2,204,202

Every county

CountyDemocratRepublicanOthersTotalMargin
Milwaukee 255,756 55.7% 197,380 43.0% 5,693 458,829 D+12.7
Dane 109,070 66.2% 52,855 32.1% 2,912 164,837 D+34.1
Waukesha 48,958 35.5% 87,406 63.5% 1,353 137,717 R+27.9
Brown 35,747 44.4% 43,475 54.0% 1,268 80,490 R+9.6
Racine 36,497 47.0% 39,695 51.1% 1,480 77,672 R+4.1
Winnebago 26,183 42.4% 34,510 55.9% 1,032 61,725 R+13.5
Rock 28,457 48.6% 29,008 49.5% 1,120 58,585 R+0.9
Outagamie 22,018 38.8% 33,649 59.3% 1,075 56,742 R+20.5
Kenosha 29,872 57.5% 21,243 40.9% 840 51,955 D+16.6
Marathon 21,223 41.2% 28,447 55.2% 1,820 51,490 R+14.0
Sheboygan 23,440 48.3% 24,618 50.8% 423 48,481 R+2.4
La Crosse 19,980 45.6% 23,247 53.1% 571 43,798 R+7.5
Fond Du Lac 15,997 39.1% 24,287 59.4% 577 40,861 R+20.3
Washington 12,900 32.6% 26,304 66.4% 381 39,585 R+33.9
Eau Claire 19,909 52.8% 17,123 45.4% 658 37,690 D+7.4
Manitowoc 16,988 45.9% 19,060 51.5% 928 36,976 R+5.6
Ozaukee 11,150 32.0% 23,399 67.2% 259 34,808 R+35.2
Wood 14,232 42.4% 18,474 55.1% 829 33,535 R+12.6
Dodge 11,557 35.0% 21,129 63.9% 355 33,041 R+29.0
Walworth 12,315 37.9% 19,839 61.1% 336 32,490 R+23.2
Portage 16,020 54.5% 12,570 42.7% 829 29,419 D+11.7
Jefferson 11,441 39.2% 17,516 60.0% 241 29,198 R+20.8
Grant 9,170 41.7% 12,679 57.6% 148 21,997 R+16.0
Chippewa 11,477 52.7% 9,883 45.4% 408 21,768 D+7.3
Douglas 14,432 70.8% 5,438 26.7% 516 20,386 D+44.1
St. Croix 12,183 59.9% 8,042 39.5% 119 20,344 D+20.4
Columbia 9,361 46.2% 10,646 52.5% 261 20,268 R+6.3
Sauk 9,268 46.9% 10,267 52.0% 211 19,746 R+5.1
Waupaca 6,512 33.1% 12,945 65.9% 190 19,647 R+32.7
Marinette 7,691 41.9% 10,498 57.1% 188 18,377 R+15.3
Barron 9,239 52.9% 8,121 46.5% 102 17,462 D+6.4
Dunn 9,206 56.2% 6,920 42.2% 253 16,379 D+14.0
Oneida 6,792 41.5% 9,276 56.7% 295 16,363 R+15.2
Shawano 5,528 35.5% 9,715 62.4% 320 15,563 R+26.9
Polk 9,414 60.9% 5,905 38.2% 127 15,446 D+22.7
Monroe 6,001 40.6% 8,671 58.6% 119 14,791 R+18.1
Clark 6,175 42.3% 7,966 54.5% 469 14,610 R+12.3
Pierce 8,469 58.5% 5,847 40.4% 149 14,465 D+18.1
Calumet 5,716 41.3% 7,856 56.8% 266 13,838 R+15.5
Oconto 5,531 40.6% 8,017 58.8% 82 13,630 R+18.2
Green 5,979 44.3% 7,468 55.3% 59 13,506 R+11.0
Lincoln 5,110 40.9% 7,116 56.9% 273 12,499 R+16.0
Door 5,203 42.1% 7,106 57.5% 60 12,369 R+15.4
Vernon 5,021 40.9% 7,160 58.3% 90 12,271 R+17.4
Trempealeau 5,745 50.4% 5,571 48.9% 81 11,397 D+1.5
Juneau 4,020 41.1% 5,628 57.5% 140 9,788 R+16.4
Vilas 3,463 36.1% 5,986 62.4% 138 9,587 R+26.3
Langlade 3,799 40.0% 5,547 58.4% 148 9,494 R+18.4
Kewaunee 3,982 42.8% 5,251 56.5% 67 9,300 R+13.6
Green Lake 2,692 30.6% 6,006 68.2% 108 8,806 R+37.6
Waushara 2,870 33.0% 5,693 65.5% 134 8,697 R+32.5
Taylor 3,620 42.0% 4,704 54.6% 292 8,616 R+12.6
Iowa 4,346 50.7% 4,159 48.5% 69 8,574 D+2.2
Lafayette 3,859 47.6% 4,222 52.1% 29 8,110 R+4.5
Richland 3,088 38.3% 4,925 61.0% 60 8,073 R+22.8
Ashland 4,616 57.2% 3,331 41.3% 118 8,065 D+15.9
Jackson 3,689 46.3% 4,165 52.2% 119 7,973 R+6.0
Price 3,285 41.7% 4,404 55.9% 184 7,873 R+14.2
Rusk 3,772 50.2% 3,537 47.1% 204 7,513 D+3.1
Bayfield 4,473 59.8% 2,929 39.2% 73 7,475 D+20.7
Crawford 3,605 49.7% 3,615 49.9% 28 7,248 R+0.1
Buffalo 3,522 51.5% 3,279 47.9% 41 6,842 D+3.6
Sawyer 3,276 49.6% 3,246 49.1% 89 6,611 D+0.5
Washburn 3,714 57.3% 2,721 42.0% 50 6,485 D+15.3
Burnett 3,888 61.0% 2,412 37.8% 78 6,378 D+23.1
Adams 2,996 48.1% 3,077 49.4% 156 6,229 R+1.3
Marquette 2,188 40.7% 3,053 56.8% 138 5,379 R+16.1
Forest 2,310 53.0% 1,965 45.1% 80 4,355 D+7.9
Iron 2,215 60.2% 1,432 38.9% 31 3,678 D+21.3
Pepin 1,804 55.9% 1,385 42.9% 39 3,228 D+13.0
Florence 896 44.8% 1,092 54.6% 13 2,001 R+9.8
Menominee 566 72.8% 200 25.7% 12 778 D+47.0

Counties as they stood in 1980; 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.

Wisconsin Senate elections we hold

YearWinnerMargin
2024 Tammy Baldwin (D) D+0.8
2022 Ron Johnson (R) R+1.0
2018 Tammy Baldwin (D) D+10.8
2016 Ron Johnson (R) R+3.4
2012 Tammy Baldwin (D) D+5.5
2010 Ron Johnson (R) R+4.8
2006 Herb Kohl (D) D+37.8
2004 Russel D. Feingold (D) D+11.2
2000 Herb Kohl (D) D+24.5
1998 Russell D. Feingold (D) D+2.1
1994 Herb Kohl (D) D+17.6
1992 Russell D. Feingold (D) D+6.6
1988 Herbert H. Kohl (D) D+4.5
1986 Robert W. Kasten Jr. (R) R+3.5
1982 William Proxmire (D) D+29.5
1980 Robert W. Kasten Jr. (R) R+1.9
1976 William Proxmire (D) D+45.6
1974 Gaylord Nelson (D) D+26.0
1970 William Proxmire (D) D+42.4
1968 Gaylord Nelson (D) D+23.4
1964 William Proxmire (D) D+6.7
1962 Gaylord Nelson (D) D+5.4
1958 William Proxmire (D) D+14.4
1956 Alexander Wiley (R) R+17.4
1952 Joseph McCarthy (R) R+8.7
1950 Alexander Wiley (R) R+7.1
1946 Joseph McCarthy (R) R+23.9
1944 Alexander Wiley (R) R+7.7
1940 Robert M. La Follette Jr. (other)
1938 Alexander Wiley (R) R+20.4
1934 Robert M. La Follette Jr. (other)
1932 F. Ryan Duffy (D) D+20.8
1928 Robert La Follette Jr. (R) R+85.6
1926 John J. Blaine (R) R+42.7
1922 Robert La Follette Sr. (R) R+64.1
1920 Irvine L. Lenroot (R) R+28.4
1916 Robert La Follette Sr. (R) R+27.3
1914 Paul O. Husting (D) D+0.3