Incumbent Democrat Jonathan Jackson's unchallenged victory in the March 17 Democratic primary has reinforced trader consensus favoring Democratic control of IL-01, a safely Democratic Chicago South Side district rated Solid Democratic by Cook Political Report and Safe Democratic by Sabato's Crystal Ball. Jackson's prior landslide general election wins in 2022 and 2024, combined with the district's strong partisan lean from urban Black and working-class voting blocs, underpin the 92.5% implied probability, while Republican nominee Christian Maxwell's 65% primary win drew low turnout of under 20,000 votes signaling limited GOP infrastructure. Scenarios to shift odds include a major Jackson scandal, health event, or extraordinary national Republican midterm wave flipping deep-blue seats, though historical base rates for such upsets remain low ahead of the November 3 general election.
Experimental AI-generated summary referencing Polymarket data · UpdatedIL-01 House Election Winner
IL-01 House Election Winner
$13,204 Vol.
$13,204 Vol.
Democratic Party
93%
Republican Party
8%
$13,204 Vol.
$13,204 Vol.
Democratic Party
93%
Republican Party
8%
A candidate's party will be determined by their ballot-listed or otherwise identifiable affiliation with that party at the time all of the 2026 House elections are conclusively called by this market's resolution sources. A candidate without a ballot-listed affiliation to either the Democrat or Republican parties will be considered a member of one of these parties based on the party with which they most recently expressed their intent to caucus at the time all of the House elections are conclusively called by this market's resolution sources.
This market will resolve based on the result of the election as indicated by a consensus of credible reporting. If there is ambiguity, this market will resolve based solely on the official results as reported by the United States government, specifically the Federal Election Commission (https://www.fec.gov/).
Market Opened: Jan 28, 2026, 11:08 AM ET
Resolver
0x2F5e3684c...A candidate's party will be determined by their ballot-listed or otherwise identifiable affiliation with that party at the time all of the 2026 House elections are conclusively called by this market's resolution sources. A candidate without a ballot-listed affiliation to either the Democrat or Republican parties will be considered a member of one of these parties based on the party with which they most recently expressed their intent to caucus at the time all of the House elections are conclusively called by this market's resolution sources.
This market will resolve based on the result of the election as indicated by a consensus of credible reporting. If there is ambiguity, this market will resolve based solely on the official results as reported by the United States government, specifically the Federal Election Commission (https://www.fec.gov/).
Resolver
0x2F5e3684c...Incumbent Democrat Jonathan Jackson's unchallenged victory in the March 17 Democratic primary has reinforced trader consensus favoring Democratic control of IL-01, a safely Democratic Chicago South Side district rated Solid Democratic by Cook Political Report and Safe Democratic by Sabato's Crystal Ball. Jackson's prior landslide general election wins in 2022 and 2024, combined with the district's strong partisan lean from urban Black and working-class voting blocs, underpin the 92.5% implied probability, while Republican nominee Christian Maxwell's 65% primary win drew low turnout of under 20,000 votes signaling limited GOP infrastructure. Scenarios to shift odds include a major Jackson scandal, health event, or extraordinary national Republican midterm wave flipping deep-blue seats, though historical base rates for such upsets remain low ahead of the November 3 general election.
Experimental AI-generated summary referencing Polymarket data · Updated
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