Missouri's 3rd congressional district carries a Cook Partisan Voter Index of R+10, reflecting consistent Republican advantages in recent presidential voting, which underpins the strong trader consensus favoring the Republican nominee. Incumbent Bob Onder secured the GOP primary on August 4, 2026, while Democrat Bethany Mann advanced on her side, setting up a November general election in a seat rated Solid or Safe Republican by Cook Political Report, Sabato's Crystal Ball, and Inside Elections. The district's established partisan lean and lack of competitive indicators in recent cycles sustain this positioning. A major national Democratic surge, unforeseen scandal affecting the incumbent, or sharp turnout shifts could narrow margins, though such developments would need to overcome the structural Republican edge.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedMO-03 House Election Winner
$21,200 Vol.
$21,200 Vol.
Republican Party
91%
Democratic Party
9%
$21,200 Vol.
$21,200 Vol.
Republican Party
91%
Democratic 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, 11:10 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...Missouri's 3rd congressional district carries a Cook Partisan Voter Index of R+10, reflecting consistent Republican advantages in recent presidential voting, which underpins the strong trader consensus favoring the Republican nominee. Incumbent Bob Onder secured the GOP primary on August 4, 2026, while Democrat Bethany Mann advanced on her side, setting up a November general election in a seat rated Solid or Safe Republican by Cook Political Report, Sabato's Crystal Ball, and Inside Elections. The district's established partisan lean and lack of competitive indicators in recent cycles sustain this positioning. A major national Democratic surge, unforeseen scandal affecting the incumbent, or sharp turnout shifts could narrow margins, though such developments would need to overcome the structural Republican edge.
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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