South Dakota’s at-large House seat remains a solidly Republican district, with the party’s nominee Marty Jackley holding a commanding position ahead of the November 3 general election. The state’s consistent R+25 or greater lean, combined with no Democratic congressional victory since 2008, underpins trader consensus reflected in the 94.5% Republican price. Jackley, the state attorney general, secured the nomination with nearly 80% in the June primary after incumbent Dusty Johnson retired to run for governor. Democrat Nicole Gronli faces the race unopposed in her primary but lacks the statewide profile or resources to overcome structural barriers. All major forecasters rate the contest Safe or Solid Republican. A late scandal, health event, or unprecedented national Democratic surge could theoretically narrow the margin, though such developments remain low-probability given the district’s voting patterns and the absence of competitive polling.
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
$31,616 Vol.
$31,616 Vol.
Republican Party
95%
Democratic Party
3%
$31,616 Vol.
$31,616 Vol.
Republican Party
95%
Democratic Party
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...South Dakota’s at-large House seat remains a solidly Republican district, with the party’s nominee Marty Jackley holding a commanding position ahead of the November 3 general election. The state’s consistent R+25 or greater lean, combined with no Democratic congressional victory since 2008, underpins trader consensus reflected in the 94.5% Republican price. Jackley, the state attorney general, secured the nomination with nearly 80% in the June primary after incumbent Dusty Johnson retired to run for governor. Democrat Nicole Gronli faces the race unopposed in her primary but lacks the statewide profile or resources to overcome structural barriers. All major forecasters rate the contest Safe or Solid Republican. A late scandal, health event, or unprecedented national Democratic surge could theoretically narrow the margin, though such developments remain low-probability given the district’s voting patterns and the absence of competitive polling.
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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