Wyoming's entrenched Republican dominance, with no Democratic U.S. Senate victory since 1977 and Donald Trump's 45-point 2024 presidential win, underpins trader consensus pricing a GOP hold at 93%, despite incumbent Cynthia Lummis's December 2025 retirement opening the seat. U.S. House Rep. Harriet Hageman leads the GOP primary field against Jimmy Skovgard, bolstered by endorsements from Lummis, Sen. John Barrasso, and Trump, plus strong early fundraising exceeding $970,000. Democrat James Byrd faces steep odds in the August 18 primary amid GOP supermajorities in state government. Challenges would require a scandal-plagued Republican nominee, national anti-GOP midterm backlash, or unexpectedly high Democratic turnout in this sparsely populated battleground.
Experimental AI-generated summary referencing Polymarket data · Updated
Republican
93%

Democrat
8%

Republican
93%

Democrat
8%
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 no Democratic U.S. Senate victory since 1977 and Donald Trump's 45-point 2024 presidential win, underpins trader consensus pricing a GOP hold at 93%, despite incumbent Cynthia Lummis's December 2025 retirement opening the seat. U.S. House Rep. Harriet Hageman leads the GOP primary field against Jimmy Skovgard, bolstered by endorsements from Lummis, Sen. John Barrasso, and Trump, plus strong early fundraising exceeding $970,000. Democrat James Byrd faces steep odds in the August 18 primary amid GOP supermajorities in state government. Challenges would require a scandal-plagued Republican nominee, national anti-GOP midterm backlash, or unexpectedly high Democratic turnout in this sparsely populated battleground.
Experimental AI-generated summary referencing Polymarket data · Updated



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