Incumbent Republican Bryan Steil holds a clear edge in Wisconsin's 1st congressional district, reflected in the 69.5% Republican probability on the market. The district carries a Cook Partisan Voter Index of R+2 and has delivered double-digit Republican margins in recent cycles, including Steil's 2024 victory. Forecasters rate the seat Likely Republican or Solid Republican. Steil benefits from strong name recognition, substantial fundraising, and an uncontested primary. Democrat Mitchell Berman emerged from the August 11 primary but faces an uphill contest in a district with manufacturing and union voters where national midterm dynamics have not yet shifted the baseline enough to close the gap. A single recent partisan poll showed a near tie, yet broader structural factors continue to anchor trader consensus behind the Republican outcome ahead of the November 3 general election.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedWI-01 House Election Winner
Republican Party
70%
Democratic Party
31%
Republican Party
70%
Democratic 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...Incumbent Republican Bryan Steil holds a clear edge in Wisconsin's 1st congressional district, reflected in the 69.5% Republican probability on the market. The district carries a Cook Partisan Voter Index of R+2 and has delivered double-digit Republican margins in recent cycles, including Steil's 2024 victory. Forecasters rate the seat Likely Republican or Solid Republican. Steil benefits from strong name recognition, substantial fundraising, and an uncontested primary. Democrat Mitchell Berman emerged from the August 11 primary but faces an uphill contest in a district with manufacturing and union voters where national midterm dynamics have not yet shifted the baseline enough to close the gap. A single recent partisan poll showed a near tie, yet broader structural factors continue to anchor trader consensus behind the Republican outcome ahead of the November 3 general election.
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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