Incumbent Republican Jim Risch holds a commanding position in the 2026 Idaho Senate race due to the state's longstanding Republican lean, where recent presidential results showed double-digit margins favoring the party. Risch secured his primary nomination comfortably and benefits from name recognition and fundraising advantages as a three-term senator. The July withdrawal of Democratic nominee David Roth consolidated opposition support behind independent challenger Todd Achilles, yet available polling and forecasts still show Risch ahead by wide margins. Scenarios that could narrow the gap include a major scandal or health event affecting the incumbent, unusually high turnout among independents and moderates, or a broader national political shift against Republicans before November.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated$32,162 Vol.
$32,162 Vol.

Republican
96%

Democrat
3%
$32,162 Vol.
$32,162 Vol.

Republican
96%

Democrat
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, 5:35 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...Incumbent Republican Jim Risch holds a commanding position in the 2026 Idaho Senate race due to the state's longstanding Republican lean, where recent presidential results showed double-digit margins favoring the party. Risch secured his primary nomination comfortably and benefits from name recognition and fundraising advantages as a three-term senator. The July withdrawal of Democratic nominee David Roth consolidated opposition support behind independent challenger Todd Achilles, yet available polling and forecasts still show Risch ahead by wide margins. Scenarios that could narrow the gap include a major scandal or health event affecting the incumbent, unusually high turnout among independents and moderates, or a broader national political shift against Republicans 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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