United States Presidential election7 Nov 2028in 728 days Senate D 97% House D 58% Calendar Track record Research
PollingForecast.com United States
Closest results
United States · Election results history · 2018 Senate · Wisconsin
Election 2018 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.

2018 US Senate election in Wisconsin

Tammy Baldwin (Democrat) beat Leah Vukmir (Republican) in Wisconsin in 2018, 55.4% to 44.6%, a margin of 10.8 points and 288,029 votes.

The Democratic hold continued from 2012, when Tammy Baldwin also won.

Republicans led in 43 of the 72 counties and Democrats in 29. The largest, Milwaukee, cast 392,115 votes and went to the Democrat by 43.0 points. The closest was Buffalo, where 23 votes separated the two parties.

United States
Results
2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988 1987 1986 1985 1984 1983 1982 1981 1980 1979 1978 1977 1976 1975 1974 1973 1972 1971 1970 1969 1968 1967 1966 1965 1964 1963 1962 1961 1960 1959 1958 1957 1956 1955 1954 1953 1952 1951 1950 1949 1948 1947 1946 1945 1944 1943 1942 1941 1940 1939 1938 1937 1936 1935 1934 1933 1932 1931 1930 1929 1928 1927 1926 1925 1924 1923 1922 1921 1920 1919 1918 1917 1916 1915 1914 1913 1912 1911 1910 1909 1908 1907 1906 1905 1904 1903 1902 1901 1900 1899 1898 1897 1896 1895 1894 1893 1892 1891 1890 1889 1888 1887 1886 1885 1884 1883 1882 1881 1880 1879 1878 1877 1876 1875 1874 1873 1872 1871 1870 1869 1868 1867 1866 1865
If only voted How this works
If the polls miss like

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
Tammy Baldwin won Democratic 1,472,914 55.4%
Leah Vukmir Republican 1,184,885 44.6%
All other candidates 42 0.0%
Total2,657,841

Every county

CountyDemocratRepublicanOthersTotalMargin
Milwaukee 280,426 71.5% 111,684 28.5% 5 392,115 D+43.0
Dane 228,050 77.7% 65,515 22.3% 6 293,571 D+55.4
Waukesha 84,147 38.2% 136,190 61.8% 1 220,338 R+23.6
Brown 59,132 51.5% 55,750 48.5% 114,882 D+2.9
Racine 45,397 52.4% 41,213 47.6% 1 86,611 D+4.8
Outagamie 41,618 50.2% 41,354 49.8% 2 82,974 D+0.3
Winnebago 40,185 53.2% 35,282 46.8% 75,467 D+6.5
Washington 23,072 32.9% 47,102 67.1% 1 70,175 R+34.2
Rock 42,616 62.7% 25,322 37.3% 67,938 D+25.5
Kenosha 38,296 56.8% 29,181 43.2% 67,477 D+13.5
Marathon 29,084 47.1% 32,661 52.9% 1 61,746 R+5.8
La Crosse 35,731 62.8% 21,160 37.2% 56,891 D+25.6
Sheboygan 24,183 45.8% 28,667 54.2% 52,850 R+8.5
Ozaukee 21,464 42.1% 29,480 57.9% 50,944 R+15.7
Eau Claire 29,614 61.0% 18,957 39.0% 4 48,575 D+21.9
Walworth 20,299 45.0% 24,844 55.0% 45,143 R+10.1
Fond du Lac 19,065 42.8% 25,496 57.2% 1 44,562 R+14.4
St. Croix 18,765 47.1% 21,069 52.9% 1 39,835 R+5.8
Jefferson 18,055 47.7% 19,809 52.3% 37,864 R+4.6
Dodge 16,007 42.7% 21,482 57.3% 1 37,490 R+14.6
Manitowoc 16,541 46.8% 18,795 53.2% 35,336 R+6.4
Portage 20,170 58.2% 14,510 41.8% 2 34,682 D+16.3
Wood 15,992 48.6% 16,899 51.4% 1 32,892 R+2.8
Sauk 16,960 58.8% 11,866 41.2% 28,826 D+17.7
Chippewa 13,798 49.9% 13,830 50.1% 1 27,629 R+0.1
Columbia 15,230 56.6% 11,674 43.4% 26,904 D+13.2
Calumet 10,741 45.6% 12,822 54.4% 23,563 R+8.8
Waupaca 9,509 42.6% 12,792 57.4% 22,301 R+14.7
Oneida 9,338 48.0% 10,112 52.0% 1 19,451 R+4.0
Grant 10,554 54.4% 8,860 45.6% 19,414 D+8.7
Douglas 11,689 62.8% 6,925 37.2% 18,614 D+25.6
Polk 8,299 44.8% 10,245 55.2% 18,544 R+10.5
Barron 8,571 46.4% 9,911 53.6% 1 18,483 R+7.2
Dunn 9,743 53.0% 8,623 46.9% 1 18,367 D+6.1
Shawano 7,414 41.5% 10,438 58.5% 17,852 R+16.9
Pierce 9,216 52.8% 8,247 47.2% 1 17,464 D+5.5
Oconto 7,042 40.4% 10,392 59.6% 17,434 R+19.2
Marinette 7,520 43.6% 9,731 56.4% 1 17,252 R+12.8
Green 10,294 60.5% 6,732 39.5% 17,026 D+20.9
Door 9,442 55.8% 7,494 44.2% 16,936 D+11.5
Monroe 8,151 48.8% 8,559 51.2% 1 16,711 R+2.4
Lincoln 6,463 48.4% 6,901 51.6% 13,364 R+3.3
Vernon 7,495 57.8% 5,459 42.1% 2 12,956 D+15.7
Vilas 5,308 42.5% 7,166 57.4% 1 12,475 R+14.9
Trempealeau 6,526 53.7% 5,633 46.3% 12,159 D+7.3
Clark 5,084 43.7% 6,558 56.3% 1 11,643 R+12.7
Iowa 7,270 65.5% 3,835 34.5% 11,105 D+30.9
Waushara 4,434 42.1% 6,106 57.9% 10,540 R+15.9
Juneau 4,658 46.2% 5,429 53.8% 10,087 R+7.6
Kewaunee 4,287 45.4% 5,158 54.6% 9,445 R+9.2
Adams 4,537 48.3% 4,854 51.7% 9,391 R+3.4
Langlade 3,889 42.6% 5,239 57.4% 9,128 R+14.8
Bayfield 5,541 63.2% 3,233 36.8% 8,774 D+26.3
Green Lake 3,222 39.7% 4,893 60.3% 8,115 R+20.6
Sawyer 3,938 48.6% 4,159 51.4% 8,097 R+2.7
Taylor 3,028 37.7% 5,005 62.3% 8,033 R+24.6
Jackson 4,370 54.8% 3,611 45.2% 7,981 D+9.5
Washburn 3,664 46.6% 4,190 53.3% 1 7,855 R+6.7
Burnett 3,239 43.0% 4,289 57.0% 7,528 R+13.9
Marquette 3,337 46.8% 3,791 53.2% 7,128 R+6.4
Richland 4,000 57.3% 2,980 42.7% 6,980 D+14.6
Ashland 4,533 65.8% 2,351 34.2% 6,884 D+31.7
Price 3,136 47.2% 3,515 52.8% 6,651 R+5.7
Crawford 3,852 58.8% 2,703 41.2% 6,555 D+17.5
Lafayette 3,592 55.3% 2,900 44.7% 6,492 D+10.7
Rusk 2,654 44.0% 3,381 56.0% 3 6,038 R+12.0
Buffalo 2,945 49.8% 2,968 50.2% 5,913 R+0.4
Forest 1,879 47.7% 2,062 52.3% 3,941 R+4.6
Pepin 1,529 49.2% 1,578 50.8% 3,107 R+1.6
Iron 1,459 47.6% 1,605 52.4% 3,064 R+4.8
Florence 729 33.6% 1,438 66.4% 2,167 R+32.7
Menominee 896 80.3% 220 19.7% 1,116 D+60.6

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