2026 results · Illinois · Illinois 15th District
Mary Miller, the Republican, wins re-election in Illinois's 15th District
Donald Trump carried the district by 39.4 points in 2024; this year's count is a 5.6-point move toward the Democrats.
| Candidate | Votes | Share | Share of the vote |
|---|---|---|---|
| Mary MillerRepublican, incumbent | 192,711 | 66.9% | |
| Jennifer ToddDemocrat | 95,350 | 33.1% |
Called by Call the Map, Nov 3, 9:25 PM EST · 94% counted.
About 94% of the expected vote counted288,061 votesCount last changed Nov 7, 1:02 PM EST · checked Nov 7, 5:00 PM ESTSource: the official state and county counts, gathered by civicAPI
The map
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About the seat
Illinois's 15th District takes in all or part of 35 counties. The Republicans held it before this election. Its voters went R+39.4 for president in 2024. Its move from that vote, 5.6 points toward the Democrats, ranks 15 of 17 among the state's districts, counting from the largest move toward the Democrats.
- 2024 president
- R+39.4
- Move from 2024, rank in state
- 15 of 17
- Madison County13%
- Adams County8%
- Sangamon County8%
- Macon County7%
- Champaign County6%
- Coles County4%
- Christian County4%
- Morgan County4%
- 27 more46%
Shares are of the votes counted this year. The district was redrawn for 2026 or had no contest in 2024, so no 2024 House race compares like for like.
What the count shows
Added together, the 35 counties compared moved 5.7 points toward the Democrats from the 2024 presidential vote.
The counties compared cast 76% as many votes as in 2024, from 96% in Fulton County to 53% in Schuyler County.
Schuyler County moved most: R+46.6 for president in 2024, R+58.9 this year
The 10 counties with the largest moves from the 2024 presidential vote, among those with 2,000 or more votes for president in 2024 and a quarter of that counted, and at least half a percent of the state's 2024 vote. Each line runs from the 2024 margin to this year’s.
2024 president 2026
Madison County added 6,475 net votes for Todd against the 2024 margin, 12% of the district's change
Across the 35 counties compared, the margin moved by 52,164 votes toward Todd: this year’s lead in votes against the 2024 presidential lead in votes, county by county. The figure counts voters who changed sides and differences in who turned out alike; the count cannot tell them apart.
- Madison County+6,475 Todd
- Adams County+4,359 Todd
- Macon County+3,491 Todd
- Christian County+2,812 Todd
- Sangamon County+2,608 Todd
- Champaign County+2,203 Todd
- Jersey County+2,196 Todd
- Montgomery County+1,974 Todd
Illinois’s ballot
StatewideDemocrats won all 6 of Illinois's statewide races.
U.S. HouseBefore the election D 14–3, now D 14–3
won leads, still counting changed party. Margins are the leader’s share minus the runner-up’s, in points.
Every count on this page is the official count, from the state and its counties. Counts are unofficial until the state certifies them. The 2024 comparison is the presidential vote, Kamala Harris against Donald Trump, on the same ground. Margins are the Democrat minus the Republican, in points of all votes.