Wisconsin U.S. Senate election history

Every Wisconsin U.S. Senate election from 1976 to 2024: winners, parties, margins and the seats that changed hands.

Current senators

Wisconsin Senate races: Republican minus Democratic share, in points. Bars above the line lean Republican, below lean Democratic.

Year	Seat	Winner	Party	Runner-up	Margin	Votes
2024	Class I	Tammy Baldwin	Democratic	Eric D. Hovde	0.9	3,390,787
2022	Class III	Ron Johnson	Republican	Mandela Barnes	1.0	2,652,477
2018	Class I	Tammy Baldwin	Democratic	Leah Vukmir	10.8	2,660,763
2016	Class III	Ron Johnson	Republican	Russ Feingold	3.4	2,948,741
2012	Class I	Tammy Baldwin	Democratic	Tommy Thompson	5.6	3,009,411
2010 flip	Class III	Ron Johnson	Republican	Russ Feingold	4.8	2,171,331
2006	Class I	Herb Kohl	Democratic	Robert Gerald Lorge	37.8	2,138,297
2004	Class III	Russ Feingold	Democratic	Tim Michels	11.2	2,949,743
2000	Class I	Herb Kohl	Democratic	John Gillespie	24.5	2,540,083
1998	Class III	Russ Feingold	Democratic	Mark W. Neumann	2.2	1,760,836
1994	Class I	Herb Kohl	Democratic	Robert T. Welch	17.6	1,565,628
1992 flip	Class III	Russ Feingold	Democratic	Bob Kasten	6.6	2,454,665
1988	Class I	Herb Kohl	Democratic	Susan Engeleiter	4.5	2,168,190
1986	Class III	Bob Kasten	Republican	Edward R. Garvey	3.5	1,483,174
1982	Class I	William Proxmire	Democratic	Scott McCallum	29.5	1,544,883
1980 flip	Class III	Bob Kasten	Republican	Gaylord Anton Nelson	1.9	2,204,202
1976	Class I	William Proxmire	Democratic	Stanley York	45.2	1,935,183

Tammy Baldwin won in 2024 by 0.9 points.

Tammy Baldwin (Democrat, term ends 2031) and Ron Johnson (Republican, term ends 2029).

In 2024, when Tammy Baldwin won.

In 2022, when Ron Johnson won.

Results: FiveThirtyEight (from 1976 for Senate, 1996 for governor). Current members: congress-legislators.