Incumbent Rep. Ryan Zinke's March retirement opened Montana's competitive 1st Congressional District as a top battleground, yet trader consensus prices Republicans at 53.5% implied probability, aligning with Likely Republican ratings from Cook Political Report (updated April 28), Inside Elections, and Sabato's Crystal Ball in the R+5 district Trump carried 54%-43% in 2024. Contested June 2 primaries pit GOP frontrunner Aaron Flint—backed by Trump, Zinke, Gov. Gianforte, and Sen. Sheehy with $429,000 cash-on-hand—against Secretary of State Christi Jacobsen and others, while Democrats feature Ryan Busse ($368,000 cash-on-hand) in a fragmented field. The race stays tight amid primary uncertainty, Democratic ad buys, and awaiting head-to-head polling; nominee strength and national midterm trends could tip the balance.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedMT-01 House Election Winner
MT-01 House Election Winner
Republican Party
52%
Democratic Party
46%
Republican Party
52%
Democratic Party
46%
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, 12:19 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 Rep. Ryan Zinke's March retirement opened Montana's competitive 1st Congressional District as a top battleground, yet trader consensus prices Republicans at 53.5% implied probability, aligning with Likely Republican ratings from Cook Political Report (updated April 28), Inside Elections, and Sabato's Crystal Ball in the R+5 district Trump carried 54%-43% in 2024. Contested June 2 primaries pit GOP frontrunner Aaron Flint—backed by Trump, Zinke, Gov. Gianforte, and Sen. Sheehy with $429,000 cash-on-hand—against Secretary of State Christi Jacobsen and others, while Democrats feature Ryan Busse ($368,000 cash-on-hand) in a fragmented field. The race stays tight amid primary uncertainty, Democratic ad buys, and awaiting head-to-head polling; nominee strength and national midterm trends could tip the balance.
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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