2024Final results
2024 election for Illinois's 1st District
U.S. House · Illinois
Jonathan Jackson (D) won with 65.8% of the vote, defeating Marcus Lewis (R) by 31.7 points.
Jonathan JacksonDemocrat · winner
65.8%208,398
Marcus LewisRepublican
34.1%108,064
The same year, the district voted R+24.4 for president; this race was D+31.7, a split ticket.316,552 votes
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 3:26 AM ET
The seat over time
D − R margin in this seat's races around 2024
Races before and after
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 3:26 AM ET
Money in this race
Each line compares the two campaigns on one scale.
Jonathan JacksonNo Republican
$654.1K
Raised by the campaign
—
$601.5K
Spent by the campaign
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$53.7K
Cash on hand
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Campaign money: FEC, through Dec 31, 2024.
Source: FEC campaign filingsUpdated Dec 31, 2024