Incumbent Democrat Sean Casten secured nomination with roughly 76% in the March 2026 primary against a challenger, while Republican Niki Conforti advanced with over 82% in her primary as the 2024 nominee. Nonpartisan forecasters rate the suburban Chicago district as Solid or Safe Democratic, consistent with Casten's 54% win in the prior cycle. Casten maintains a substantial fundraising edge and cash-on-hand advantage heading into the November 3 general election. Trader consensus reflects the district's partisan lean, incumbency, and lack of recent developments shifting the competitive balance. A major national wave, candidate-specific scandal, or unexpected turnout surge could narrow the gap, though structural factors limit such scenarios.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedIL-06 House Election Winner
$43,182 Vol.
$43,182 Vol.
Sean Casten (D)
96%
Niki Conforti (R)
2%
$43,182 Vol.
$43,182 Vol.
Sean Casten (D)
96%
Niki Conforti (R)
2%
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, 11:09 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 Sean Casten secured nomination with roughly 76% in the March 2026 primary against a challenger, while Republican Niki Conforti advanced with over 82% in her primary as the 2024 nominee. Nonpartisan forecasters rate the suburban Chicago district as Solid or Safe Democratic, consistent with Casten's 54% win in the prior cycle. Casten maintains a substantial fundraising edge and cash-on-hand advantage heading into the November 3 general election. Trader consensus reflects the district's partisan lean, incumbency, and lack of recent developments shifting the competitive balance. A major national wave, candidate-specific scandal, or unexpected turnout surge could narrow the gap, though structural factors limit such scenarios.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated
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