Incumbent Republican Ryan Zinke's early March announcement declining reelection opened Montana's competitive 1st Congressional District, boosting Democratic odds to 58.5% trader consensus amid a crowded GOP primary field that risks vote-splitting ahead of the June 2 primaries. Western MT-01, spanning liberal enclaves like Missoula in a Trump +11 district from 2024, draws early DCCC investment as a pickup target. Democrat Ryan Busse leads his party's primary at 35% in a late-March Tulchin poll, strengthening unified opposition potential against fragmented Republicans. National midterm dynamics and resource advantages sustain Dem lead, though GOP consolidation or scandals could shift probabilities before November 3.
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
40%
Democratic Party
57%
Republican Party
40%
Democratic Party
57%
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 Republican Ryan Zinke's early March announcement declining reelection opened Montana's competitive 1st Congressional District, boosting Democratic odds to 58.5% trader consensus amid a crowded GOP primary field that risks vote-splitting ahead of the June 2 primaries. Western MT-01, spanning liberal enclaves like Missoula in a Trump +11 district from 2024, draws early DCCC investment as a pickup target. Democrat Ryan Busse leads his party's primary at 35% in a late-March Tulchin poll, strengthening unified opposition potential against fragmented Republicans. National midterm dynamics and resource advantages sustain Dem lead, though GOP consolidation or scandals could shift probabilities before November 3.
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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