Incumbent U.S. Rep. Dusty Johnson's decision to run for governor has left South Dakota's at-large House seat open, yet trader consensus prices Republicans at 94% due to the state's strong Republican lean (R+16 partisan voting index) and historical landslide margins, like Johnson's 72% win in 2024. Attorney General Marty Jackley dominates recent GOP primary polls, leading James Bialota 68%-12% in Mason-Dixon's April survey with over $1 million raised, while Democrat Nicole Gronli advances unopposed but trails in fundraising. The June 2 primary looms as the key near-term event, though a Democratic upset would require a GOP nominee scandal, primary bloodbath weakening the winner, or extraordinary national midterm dynamics.
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
SD-AL House Election Winner
$16,931 Vol.
$16,931 Vol.
Republican Party
94%
Democratic Party
4%
$16,931 Vol.
$16,931 Vol.
Republican Party
94%
Democratic Party
4%
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...Incumbent U.S. Rep. Dusty Johnson's decision to run for governor has left South Dakota's at-large House seat open, yet trader consensus prices Republicans at 94% due to the state's strong Republican lean (R+16 partisan voting index) and historical landslide margins, like Johnson's 72% win in 2024. Attorney General Marty Jackley dominates recent GOP primary polls, leading James Bialota 68%-12% in Mason-Dixon's April survey with over $1 million raised, while Democrat Nicole Gronli advances unopposed but trails in fundraising. The June 2 primary looms as the key near-term event, though a Democratic upset would require a GOP nominee scandal, primary bloodbath weakening the winner, or extraordinary national midterm dynamics.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated



Beware of external links.
Beware of external links.
Frequently Asked Questions