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Illinois·IL·FIPS 17131
Mercer County
Voted Republican in 2024 · 8,346 votes cast
About Mercer County
Mercer County is a county in Illinois. According to the 2020 census, it had a population of 15,699. Its county seat is Aledo. Mercer County is included in the Davenport-Moline-Rock Island, IA-IL Metropolitan Statistical Area.
Read more on Wikipedia →Total Votes (2024)
8,346
Winner Margin
R+27.1
Turnout Change
-6.2%
2020→2024 Swing
R+3.1
2024 Presidential Results
All candidates · Mercer County, Illinois
Donald J Trump(Republican)
62.5%5,215
Won by 2,265 votes
Kamala D Harris(Democrat)
35.3%2,950
Other(Other)
2.2%181
Chase Oliver(Libertarian)
0.0%0
Margin History
Red = Republican, Blue = Democratic
2024R+27.1
2020R+24.0
2016R+20.4
🔴
Swung Right in 2024
Mercer County shifted 3.1 points toward Republicans compared to 2020. Voter turnout decreased by 6.2%.
What does Mercer County really think?
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Election data: MIT Election Data Science Lab, Harvard Dataverse (CC BY 4.0)