Illinois U.S. Senate election history

Every Illinois U.S. Senate election from 1978 to 2022: winners, parties, margins and the seats that changed hands.

Current senators

Illinois 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
2022	Class III	Tammy Duckworth	Democratic	Kathy Salvi	15.3	4,098,896
2020	Class II	Richard J. Durbin	Democratic	Mark C. Curran	16.1	5,968,901
2016 flip	Class III	Tammy Duckworth	Democratic	Mark Kirk	15.1	5,491,878
2014	Class II	Richard J. Durbin	Democratic	James D. Oberweis	10.9	3,603,519
2010	Class III	Mark Kirk	Republican	Alexi Giannoulias	1.6	3,704,473
2010 special	Class III	Mark Kirk	Republican	Alexi Giannoulias	1.6	3,704,473
2008	Class II	Richard J. Durbin	Democratic	Steve Sauerberg	39.3	5,329,884
2004 flip	Class III	Barack Obama	Democratic	Alan Keyes	42.9	5,141,520
2002	Class II	Richard J. Durbin	Democratic	Jim Durkin	22.3	3,486,851
1998 flip	Class III	Peter G. Fitzgerald	Republican	Carol Moseley-Braun	2.9	3,394,521
1996	Class II	Richard J. Durbin	Democratic	Al Salvi	15.4	4,250,722
1992	Class III	Carol Moseley-Braun	Democratic	Richard Williamson	10.2	4,939,558
1990	Class II	Paul M. Simon	Democratic	Lynn Martin	30.1	3,251,005
1986	Class III	Alan J. Dixon	Democratic	Judy Koehler	31.4	3,122,883
1984 flip	Class II	Paul M. Simon	Democratic	Charles Percy	1.9	4,787,335
1980	Class III	Alan J. Dixon	Democratic	David C. O'Neal	13.5	4,580,029
1978	Class II	Charles Percy	Republican	Alex Seith	7.9	3,184,764

Tammy Duckworth won in 2022 by 15.3 points.

Tammy Duckworth (Democrat, term ends 2029) and Richard J. Durbin (Democrat, term ends 2027).

In 2022, when Tammy Duckworth won.

In 2010, when Mark Kirk won.

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