Incumbent Republican Rep. Mike Bost's dominant position in the solidly red IL-12 district—rated R+16 partisan voter index—drives trader consensus to 90.5% for the GOP, reflecting his consistent double-digit polling leads over Democrat Chris Only, including a late October survey showing 58%-35%, and substantial fundraising advantage ($1.2 million vs. $150,000). No major developments have shifted dynamics in the past 30 days beyond routine campaigning and strong early voting trends favoring Republicans in southern Illinois' rural counties, mirroring 2020's 65%-33% Trump margin. Barring a late scandal, health issue, or improbable Democratic turnout surge, the race aligns with historical incumbent re-election rates above 95% in safe seats; resolves after November 5 certified results.
Resumen experimental generado por IA con datos de Polymarket · ActualizadoGanador de las elecciones a la Cámara de Representantes de IL-12
Ganador de las elecciones a la Cámara de Representantes de IL-12
Partido Republicano
91%
Partido Demócrata
9%
Partido Republicano
91%
Partido Demócrata
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/).
Mercado abierto: 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 Republican Rep. Mike Bost's dominant position in the solidly red IL-12 district—rated R+16 partisan voter index—drives trader consensus to 90.5% for the GOP, reflecting his consistent double-digit polling leads over Democrat Chris Only, including a late October survey showing 58%-35%, and substantial fundraising advantage ($1.2 million vs. $150,000). No major developments have shifted dynamics in the past 30 days beyond routine campaigning and strong early voting trends favoring Republicans in southern Illinois' rural counties, mirroring 2020's 65%-33% Trump margin. Barring a late scandal, health issue, or improbable Democratic turnout surge, the race aligns with historical incumbent re-election rates above 95% in safe seats; resolves after November 5 certified results.
Resumen experimental generado por IA con datos de Polymarket · Actualizado
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