Illinois

Illinois became a state in December 1818. Largely Republican from the Civil War through the 1920s, the state voted Democratic throughout the Great Depression and World War II, then returned to the Republicans for eight out of 10 elections from 1952 through 1988. Illinois has voted Democratic in the last eight elections. In 2020, Joe Biden beat Donald Trump by 17%.

With 19 electoral votes as of 2024, the state is the largest electoral prize in the Midwest, although nearby Ohio, with 17, gets considerably more visibility in the general election as it has - until recently - been a presidential bellwether. Like many other northern industrial states, Illinois has lost electoral influence as its population has not grown with the rest of the country. The 2020 Census marked the fifth consecutive Census where the state has lost at least one electoral vote.

ELECTORAL VOTES

20
2020
19
2024

2020 ELECTION

Biden Wins
2020 Illinois Polls

Recent Presidential Elections

2020
57.5% 40.6%
2016
55.8% 38.8%
2012
57.6% 40.7%
2008
61.9% 36.8%
2004
54.8% 44.5%
2000
54.6% 42.6%
Show:

Presidential Voting History

State voted with the overall winning candidate

1976
R
1980
R
1984
R
1988
R
1992
D
1996
D
2000
D
2004
D
2008
D
2012
D
2016
D
2020
D

Electoral College Votes

Democratic-Republican
Democratic
Republican

Colored bars represent electoral votes by party. Hover to see names.

U.S. Senate Voting History

  Class 1984198619881990199219941996199820002002200420062008201020122014201620182020
1
2
D
D
D
D
D
D
D
3
D
D
R
D
R
D

Data: MIT Election Data and Science Lab / Harvard Dataverse. These are general election results for the years listed.

There are three classes of Senators; one is up for election every second year. Each state has one Senator in two of the three classes.

U.S. House Voting History

District1984198619881990199219941996199820002002200420062008201020122014201620182020
1
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
2
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
3
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
4
R
R
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
5
D
D
D
D
D
R
D
D
D
D
D
D
D
D
D
D
D
D
D
6
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
D
D
7
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
8
D
D
D
D
R
R
R
R
R
R
D
D
D
R
D
D
D
D
D
9
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
10
R
R
R
R
R
R
R
R
R
R
R
R
R
R
D
R
D
D
D
11
D
D
D
D
D
R
R
R
R
R
R
R
D
R
D
D
D
D
D
12
R
R
R
R
D
D
D
D
D
D
D
D
D
D
D
R
R
R
R
13
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
14
R
R
R
R
R
R
R
R
R
R
R
R
D
R
R
R
R
D
D
15
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
16
R
R
R
D
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
17
D
D
D
D
D
D
D
D
D
D
D
D
D
R
D
D
D
D
D
18
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
19
D
D
D
D
D
D
D
D
D
R
R
R
R
R
20
D
D
D
D
D
D
R
R
R
21
D
D
D
D
22
D
D
D
D

Data: The Princeton Gerrymandering Project. These are general election results for the years listed.

Vertical lines before 1992, 2002 and 2012 show Census-related redistricting breakpoints. Geographic borders associated with district numbers may have changed.

Governor Voting History

1976
R
1978
R
1982
R
1986
R
1990
R
1994
R
1998
R
2002
D
2006
D
2010
D
2014
R
2018
D

Data: Wikipedia. These are general election results for the years listed.