Incumbent Democrat Bill Foster secured his party's nomination unopposed in the March 17, 2026, primary, solidifying his commanding position in the solidly Democratic IL-11 district spanning Chicago suburbs like Naperville and Aurora. Jeff Walter emerged from a four-way Republican primary as the nominee, but the district's partisan lean—reflected in Cook Political Report's Solid D rating—and Foster's fundraising edge maintain trader consensus at 90.5% for Democrats ahead of the November general election. While national midterm dynamics could narrow margins, realistic challengers include a major Foster scandal, GOP wave turnout surge in swing suburbs, or abrupt health/legal issues altering the race's trajectory.
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
10%
Democratic Party
91%
Republican Party
10%
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 secured his party's nomination unopposed in the March 17, 2026, primary, solidifying his commanding position in the solidly Democratic IL-11 district spanning Chicago suburbs like Naperville and Aurora. Jeff Walter emerged from a four-way Republican primary as the nominee, but the district's partisan lean—reflected in Cook Political Report's Solid D rating—and Foster's fundraising edge maintain trader consensus at 90.5% for Democrats ahead of the November general election. While national midterm dynamics could narrow margins, realistic challengers include a major Foster scandal, GOP wave turnout surge in swing suburbs, or abrupt health/legal issues altering the race's trajectory.
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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