Marty Jackley holds a commanding lead in the South Dakota at-large House race because the state has not elected a Democrat to Congress since 2008 and rates as solidly Republican across major forecasters. Jackley secured the GOP nomination with 79 percent in the June primary after serving multiple terms as state attorney general, giving him broad name recognition and establishment support in an open-seat contest following Dusty Johnson's gubernatorial bid. Nikki Gronli, the Democratic nominee and former USDA official, faces structural headwinds including limited fundraising and the state's consistent partisan tilt. An independent candidate is also on the ballot but shows negligible support. Trader consensus reflects these fundamentals, though late-breaking developments such as a major scandal, health issue, or sharp national political shift could still alter the trajectory before November.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedSD-AL House Election Winner
$32,047 Vol.
$32,047 Vol.
Marty Jackley (R)
95%
Nikki Gronli (D)
3%
$32,047 Vol.
$32,047 Vol.
Marty Jackley (R)
95%
Nikki Gronli (D)
3%
A candidate's party will be determined by their ballot-listed or otherwise identifiable affiliation with that party at the time all of the 2026 House elections are conclusively called by this market's resolution sources. A candidate without a ballot-listed affiliation to either the Democrat or Republican parties will be considered a member of one of these parties based on the party with which they most recently expressed their intent to caucus at the time all of the House elections are conclusively called by this market's resolution sources.
This market will resolve based on the result of the election as indicated by a consensus of credible reporting. If there is ambiguity, this market will resolve based solely on the official results as reported by the United States government, specifically the Federal Election Commission (https://www.fec.gov/).
Market Opened: Jan 28, 2026, 11:23 AM ET
Resolver
0x2F5e3684c...A candidate's party will be determined by their ballot-listed or otherwise identifiable affiliation with that party at the time all of the 2026 House elections are conclusively called by this market's resolution sources. A candidate without a ballot-listed affiliation to either the Democrat or Republican parties will be considered a member of one of these parties based on the party with which they most recently expressed their intent to caucus at the time all of the House elections are conclusively called by this market's resolution sources.
This market will resolve based on the result of the election as indicated by a consensus of credible reporting. If there is ambiguity, this market will resolve based solely on the official results as reported by the United States government, specifically the Federal Election Commission (https://www.fec.gov/).
Resolver
0x2F5e3684c...Marty Jackley holds a commanding lead in the South Dakota at-large House race because the state has not elected a Democrat to Congress since 2008 and rates as solidly Republican across major forecasters. Jackley secured the GOP nomination with 79 percent in the June primary after serving multiple terms as state attorney general, giving him broad name recognition and establishment support in an open-seat contest following Dusty Johnson's gubernatorial bid. Nikki Gronli, the Democratic nominee and former USDA official, faces structural headwinds including limited fundraising and the state's consistent partisan tilt. An independent candidate is also on the ballot but shows negligible support. Trader consensus reflects these fundamentals, though late-breaking developments such as a major scandal, health issue, or sharp national political shift could still alter the trajectory 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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