Incumbent Rep. Mary Miller (R) secured the Republican nomination in the March 17 primary for Illinois' 15th Congressional District, a solidly Republican seat with a strong partisan lean favoring the GOP, driving trader consensus to 94.5% for a Republican victory over Democratic nominee Jennifer Todd. The district's historical voting patterns, including large Trump margins, and Miller's established incumbency advantage amid limited Democratic fundraising underscore this commanding position, with no public polls showing a competitive race post-primaries. While a national Democratic wave, major scandal involving Miller, or unexpected Todd surge could challenge the outcome ahead of the November 3 general election, such shifts remain low-probability given the seat's safe status.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedIL-15 House Election Winner
IL-15 House Election Winner
$10,676 Vol.
$10,676 Vol.
Republican Party
95%
Democratic Party
5%
$10,676 Vol.
$10,676 Vol.
Republican Party
95%
Democratic 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...Incumbent Rep. Mary Miller (R) secured the Republican nomination in the March 17 primary for Illinois' 15th Congressional District, a solidly Republican seat with a strong partisan lean favoring the GOP, driving trader consensus to 94.5% for a Republican victory over Democratic nominee Jennifer Todd. The district's historical voting patterns, including large Trump margins, and Miller's established incumbency advantage amid limited Democratic fundraising underscore this commanding position, with no public polls showing a competitive race post-primaries. While a national Democratic wave, major scandal involving Miller, or unexpected Todd surge could challenge the outcome ahead of the November 3 general election, such shifts remain low-probability given the seat's safe status.
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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