Harriet Hageman secured the Republican nomination for Wyoming’s open U.S. Senate seat after winning the August 18 primary with roughly 65% of the vote against multiple challengers, positioning her as the clear favorite in a state where Republicans have dominated federal races for decades and last elected a Democratic senator in 1970. The open seat, created by Cynthia Lummis’s retirement, and Wyoming’s consistent large Republican margins in presidential and statewide contests underpin trader consensus around her 96.5% implied probability. James Byrd’s Democratic primary victory has not shifted the structural dynamics, with forecasts projecting a wide margin and no general-election polling yet available. Potential disruptions remain limited to late-breaking events such as major scandals, health developments, or unexpected national political shifts before the November 3 election.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedWyoming Senate Election Winner
$16,862 Vol.
$16,862 Vol.

Harriet Hageman (R)
97%

James W. Byrd (D)
3%
$16,862 Vol.
$16,862 Vol.

Harriet Hageman (R)
97%

James W. Byrd (D)
3%
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...Harriet Hageman secured the Republican nomination for Wyoming’s open U.S. Senate seat after winning the August 18 primary with roughly 65% of the vote against multiple challengers, positioning her as the clear favorite in a state where Republicans have dominated federal races for decades and last elected a Democratic senator in 1970. The open seat, created by Cynthia Lummis’s retirement, and Wyoming’s consistent large Republican margins in presidential and statewide contests underpin trader consensus around her 96.5% implied probability. James Byrd’s Democratic primary victory has not shifted the structural dynamics, with forecasts projecting a wide margin and no general-election polling yet available. Potential disruptions remain limited to late-breaking events such as major scandals, health developments, or unexpected national political shifts before the November 3 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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