The Illinois 5th congressional district's strong Democratic lean, reflected in its D+19 partisan voting index and consistent high-60s performance by the incumbent in recent cycles, underpins the market's 95% consensus for the Democratic nominee. Mike Quigley secured renomination in the March 2026 primary with roughly 65% of the vote against multiple challengers, while the Republican side advanced Tommy Hanson with limited visibility or fundraising. The district's demographics, including high education levels and urban-suburban Chicago composition, have historically favored Democratic candidates by wide margins. A major scandal, unexpected retirement, or unprecedented national Republican wave could narrow the gap, though such shifts remain low-probability events given structural factors and the absence of competitive indicators through mid-2026.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedIL-05 House Election Winner
$16,735 Vol.
$16,735 Vol.
Democratic Party
95%
Republican Party
5%
$16,735 Vol.
$16,735 Vol.
Democratic Party
95%
Republican Party
5%
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...The Illinois 5th congressional district's strong Democratic lean, reflected in its D+19 partisan voting index and consistent high-60s performance by the incumbent in recent cycles, underpins the market's 95% consensus for the Democratic nominee. Mike Quigley secured renomination in the March 2026 primary with roughly 65% of the vote against multiple challengers, while the Republican side advanced Tommy Hanson with limited visibility or fundraising. The district's demographics, including high education levels and urban-suburban Chicago composition, have historically favored Democratic candidates by wide margins. A major scandal, unexpected retirement, or unprecedented national Republican wave could narrow the gap, though such shifts remain low-probability events given structural factors and the absence of competitive indicators through mid-2026.
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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