Recent polling averages showing Democratic nominee Rebecca Cooke ahead of incumbent Republican Derrick Van Orden by roughly four points have anchored trader consensus in this competitive swing district. Multiple surveys, including those from June 2026, reflect Cooke's edge on the generic ballot and Van Orden's negative favorability ratings. Cooke's decisive August 11 primary victory consolidated Democratic support ahead of the November general election. The seat's history of narrow margins and its status as a toss-up per major forecasters further support the current implied probabilities, with traders weighing turnout dynamics and any late shifts in national conditions that could alter the narrow projected margin.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedWI-03 House Election Winner
Democratic Party
71%
Republican Party
31%
Democratic Party
71%
Republican Party
31%
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: Dec 16, 2025, 1:15 PM 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...Recent polling averages showing Democratic nominee Rebecca Cooke ahead of incumbent Republican Derrick Van Orden by roughly four points have anchored trader consensus in this competitive swing district. Multiple surveys, including those from June 2026, reflect Cooke's edge on the generic ballot and Van Orden's negative favorability ratings. Cooke's decisive August 11 primary victory consolidated Democratic support ahead of the November general election. The seat's history of narrow margins and its status as a toss-up per major forecasters further support the current implied probabilities, with traders weighing turnout dynamics and any late shifts in national conditions that could alter the narrow projected margin.
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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