Incumbent Democrat Bill Foster advanced unopposed through the March 17, 2026, Illinois Democratic primary for the 11th Congressional District, solidifying his position against Republican nominee Jeff Walter, who emerged from a crowded four-way GOP primary. Cook Political Report rates the seat Solid Democratic, reflecting the district's partisan lean, Foster's history of shrugging off primary challenges, and entrenched incumbency advantages in a suburban Illinois battleground. With no public polls showing competitiveness and limited post-primary developments, trader consensus prices Democrats at 91%, implying low upset risk absent a major scandal, national Republican midterm wave, or dramatic fundraising shift favoring Walter ahead of the November 3 general election.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedIL-11 House Election Winner
IL-11 House Election Winner
Democratic Party
91%
Republican Party
9%
Democratic Party
91%
Republican Party
9%
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 Bill Foster advanced unopposed through the March 17, 2026, Illinois Democratic primary for the 11th Congressional District, solidifying his position against Republican nominee Jeff Walter, who emerged from a crowded four-way GOP primary. Cook Political Report rates the seat Solid Democratic, reflecting the district's partisan lean, Foster's history of shrugging off primary challenges, and entrenched incumbency advantages in a suburban Illinois battleground. With no public polls showing competitiveness and limited post-primary developments, trader consensus prices Democrats at 91%, implying low upset risk absent a major scandal, national Republican midterm wave, or dramatic fundraising shift favoring Walter ahead of the November 3 general election.
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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