Wyoming's entrenched Republican dominance, with GOP registration exceeding 70% and massive midterm margins in recent cycles like Cynthia Lummis's 2020 victory by 28 points, underpins trader consensus pricing a Republican Senate win at 93% despite her December 2025 retirement creating an open seat. Rep. Harriet Hageman leads the GOP primary field with strong endorsements and fundraising, facing minimal competition ahead of the August 18 primaries, while Democrat James Byrd remains the lone notable challenger in a state absent a Democratic Senate victory since 1976. Absent recent polls or catalysts in the past month, this lopsided positioning reflects historical base rates for safe Republican holds; shifts would require a bruising GOP primary, nominee scandal, or improbable national wave.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated
Republican
93%

Democrat
7%

Republican
93%

Democrat
7%
A candidate shall be considered to represent a party in the event that he or she is the nominee of the party in question. Candidates other than the Democratic or Republican nominee (e.g., Greens, Libertarian, independent) may be added at a later date.
Candidates who run as independents will not be encompassed by the “Democrat” or “Republican” options regardless of any affiliation they may have with the party.
The resolution source for this market is the Associated Press, Fox News, and NBC. This market will resolve once all three sources call the race for the same candidate. If all three sources haven’t called the race in this state for the same candidate, this market will resolve based on the official certification.
Market Opened: Oct 13, 2025, 4:48 PM ET
Resolver
0x2F5e3684c...A candidate shall be considered to represent a party in the event that he or she is the nominee of the party in question. Candidates other than the Democratic or Republican nominee (e.g., Greens, Libertarian, independent) may be added at a later date.
Candidates who run as independents will not be encompassed by the “Democrat” or “Republican” options regardless of any affiliation they may have with the party.
The resolution source for this market is the Associated Press, Fox News, and NBC. This market will resolve once all three sources call the race for the same candidate. If all three sources haven’t called the race in this state for the same candidate, this market will resolve based on the official certification.
Resolver
0x2F5e3684c...Wyoming's entrenched Republican dominance, with GOP registration exceeding 70% and massive midterm margins in recent cycles like Cynthia Lummis's 2020 victory by 28 points, underpins trader consensus pricing a Republican Senate win at 93% despite her December 2025 retirement creating an open seat. Rep. Harriet Hageman leads the GOP primary field with strong endorsements and fundraising, facing minimal competition ahead of the August 18 primaries, while Democrat James Byrd remains the lone notable challenger in a state absent a Democratic Senate victory since 1976. Absent recent polls or catalysts in the past month, this lopsided positioning reflects historical base rates for safe Republican holds; shifts would require a bruising GOP primary, nominee scandal, or improbable national wave.
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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