Republican incumbent Mike Bost faces Democrat Julie Fortier in Illinois’s 12th congressional district on November 3, 2026. The seat’s R+22 partisan voting index and Bost’s 74 percent margin in 2024 underpin trader consensus favoring a Republican outcome. Both candidates advanced unopposed in the March primaries, limiting early volatility. Historical voting patterns and the district’s consistent double-digit Republican margins reinforce expectations of continued GOP control. A major scandal, health event affecting the incumbent, or an unusually strong national Democratic wave would represent the most plausible paths to narrowing the race, though current structural factors leave little room for such shifts absent extraordinary developments.
Eksperimental na AI-generated summary na nire-reference ang Polymarket data. Hindi ito trading advice at wala itong papel sa kung paano nire-resolve ang market na ito. · Na-updateIL-12 House Election Winner
$18,265 Vol.
$18,265 Vol.
Republican Party
94%
Democratic Party
5%
$18,265 Vol.
$18,265 Vol.
Republican Party
94%
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/).
Binuksan ang Market: 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...Republican incumbent Mike Bost faces Democrat Julie Fortier in Illinois’s 12th congressional district on November 3, 2026. The seat’s R+22 partisan voting index and Bost’s 74 percent margin in 2024 underpin trader consensus favoring a Republican outcome. Both candidates advanced unopposed in the March primaries, limiting early volatility. Historical voting patterns and the district’s consistent double-digit Republican margins reinforce expectations of continued GOP control. A major scandal, health event affecting the incumbent, or an unusually strong national Democratic wave would represent the most plausible paths to narrowing the race, though current structural factors leave little room for such shifts absent extraordinary developments.
Eksperimental na AI-generated summary na nire-reference ang Polymarket data. Hindi ito trading advice at wala itong papel sa kung paano nire-resolve ang market na ito. · Na-update
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