South Dakota’s at-large House district remains under strong Republican control, with the party holding the seat continuously since 2008 and winning every congressional race in the state during that period. Incumbent Dusty Johnson opted to run for governor instead, leaving an open seat that Attorney General Marty Jackley secured with 79 percent in the June Republican primary against limited opposition. Democrat Nikki Gronli advanced unopposed. All major forecasters rate the race Solid or Safe Republican, reflecting the state’s consistent partisan lean and limited Democratic infrastructure. The current trader consensus aligns with these structural factors, though late developments such as a major scandal or sharp turnout shift could still alter the final margin before November 3.
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
$31,497 Vol.
$31,497 Vol.
Republican Party
95%
Democratic Party
3%
$31,497 Vol.
$31,497 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 district remains under strong Republican control, with the party holding the seat continuously since 2008 and winning every congressional race in the state during that period. Incumbent Dusty Johnson opted to run for governor instead, leaving an open seat that Attorney General Marty Jackley secured with 79 percent in the June Republican primary against limited opposition. Democrat Nikki Gronli advanced unopposed. All major forecasters rate the race Solid or Safe Republican, reflecting the state’s consistent partisan lean and limited Democratic infrastructure. The current trader consensus aligns with these structural factors, though late developments such as a major scandal or sharp turnout shift could still alter the final margin before November 3.
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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