Oklahoma’s longstanding Republican dominance in federal elections, including a 34-point Trump margin in 2024 and no Democratic Senate victory since 1990, underpins the market’s 94.5% Republican consensus. The open seat, created after Markwayne Mullin’s resignation and the appointment of Alan Armstrong (ineligible for a full term), drew a competitive GOP primary won decisively by U.S. Rep. Kevin Hern in June. Democrats advanced a runoff between Jim Priest and N’Kiyla Thomas for August 25, but the field lacks the statewide profile or resources to overcome the state’s structural Republican advantage. Traders price in limited pathways for an upset, such as an unexpectedly strong Democratic nominee, a major late scandal involving Hern, or a sharp national political shift before November.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated$19,316 Vol.
$19,316 Vol.

Republican
95%

Democrat
4%
$19,316 Vol.
$19,316 Vol.

Republican
95%

Democrat
4%
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...Oklahoma’s longstanding Republican dominance in federal elections, including a 34-point Trump margin in 2024 and no Democratic Senate victory since 1990, underpins the market’s 94.5% Republican consensus. The open seat, created after Markwayne Mullin’s resignation and the appointment of Alan Armstrong (ineligible for a full term), drew a competitive GOP primary won decisively by U.S. Rep. Kevin Hern in June. Democrats advanced a runoff between Jim Priest and N’Kiyla Thomas for August 25, but the field lacks the statewide profile or resources to overcome the state’s structural Republican advantage. Traders price in limited pathways for an upset, such as an unexpectedly strong Democratic nominee, a major late scandal involving Hern, or a sharp national political shift before November.
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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