2026 results · Illinois · Illinois 9th District
Daniel K. Biss, the Democrat, holds Illinois's 9th District for the Democrats
Kamala Harris carried the district by 36.1 points in 2024; this year's count is a 16.4-point move toward the Democrats.
| Candidate | Votes | Share | Share of the vote |
|---|---|---|---|
| Daniel K. BissDemocrat | 190,684 | 76.2% | |
| John EllesonRepublican | 59,481 | 23.8% |
Called by Call the Map, Nov 4, 10:46 AM EST · 96% counted.
About 96% of the expected vote counted250,165 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 9th District takes in all or part of 3 counties. The Democrats held it before this election. Its voters went D+36.1 for president in 2024. Its move from that vote, 16.4 points toward the Democrats, ranks 8 of 17 among the state's districts, counting from the largest move toward the Democrats.
- 2024 president
- D+36.1
- 2024 House race, same lines
- D+36.8
- Move from 2024, rank in state
- 8 of 17
- Cook County80%
- McHenry County13%
- Lake County7%
Shares are of the votes counted this year. The 2024 House figure is the same district, on the same lines.
What the count shows
Added together, the 3 counties compared moved 16.4 points toward the Democrats from the 2024 presidential vote.
The counties compared cast 71% as many votes as in 2024, from 73% in McHenry County to 71% in Cook County.
Cook County moved most: D+43.6 for president in 2024, D+60.7 this year
The 3 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. Each line runs from the 2024 margin to this year’s.
2024 president 2026
McHenry County added 5,254 net votes for Biss against the 2024 margin
Across the 3 counties compared, the margin moved by 4,554 votes toward Biss: 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.
- McHenry County+5,254 Biss
- Cook County+1,659 Elleson
- Lake County+959 Biss
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.