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Who’s ahead in Illinois?

Updating average for each candidate in 2024 presidential polls, accounting for each poll's recency, sample size, methodology and house effects.

KEY

ESTIMATE

95% OF AVERAGES PROJECTED TO FALL IN THIS RANGE

Polling averages are adjusted based on state and national polls, which means candidates’ averages can shift even if no new polls have been added to this page. Read the full methodology here.

On Sept. 13, 2024, we fixed a bug in this polling average that arose after Robert F. Kennedy Jr. dropped out of the race on Aug. 23, 2024. See here for more details and an archived version of the previous average.

DatesSamplei

SAMPLE TYPES

A

ADULTS

V

VOTERS

LV

LIKELY VOTERS

RV

REGISTERED VOTERS

PollsterResultNet result
Datesi

SAMPLE TYPES

A

ADULTS

V

VOTERS

LV

LIKELY VOTERS

RV

REGISTERED VOTERS

PollsterResult

President: general election, Illinois, 2024

Oct. 4-28
400LV
Oct. 4-28
400LV
Harris
58%
Harris
58%

Harris

58%

Trump

42%
42%
Trump  Harris+17
Sept. 3-Oct. 5
400LV
Sept. 3-Oct. 5
400LV
Harris
59%
Harris
59%

Harris

59%

Trump

41%
41%
Trump  Harris+18
Aug. 6-29
400LV
Aug. 6-29
400LV
Harris
58%
Harris
58%

Harris

58%

Trump

42%
42%
Trump  Harris+16
April 13-21
643LV
April 13-21
643LV
Kennedy
48%
Kennedy
48%

Kennedy

48%

Trump

37%
37%
Trump  Kennedy+11
April 13-21
643LV
April 13-21
643LV
Biden
46%
Biden
46%

Biden

46%

Kennedy

43%
43%
Kennedy  Biden+3
Oct. 1-4
468RV
Oct. 1-4
468RV
Biden
43%
Biden
43%

Biden

43%

Trump

34%
34%
Trump  Biden+10
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Candidate is an incumbent

Partisan types

Democratic-funded

Republican-funded

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Campaign poll

The position of the flag indicates whether the organization is partisan. Organizations are considered partisan if they operate on behalf of a candidate, party, campaign committee, PAC, super PAC, hybrid PAC, 501(c)(4), 501(c)(5) or 501(c)(6) organization that conducts a large majority of its political activity on behalf of one political party.

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