Incumbent Republican Sen. Mike Rounds' reelection bid for a third term, backed by strong fundraising exceeding $3 million and a Trump endorsement, anchors trader consensus at 92.5% for a GOP victory in the November 3 general election. South Dakota's deep-red status—marked by Rounds' 2020 win with 65.7% and consistent Republican dominance in presidential races—bolsters this edge, with recent Public Policy Polling surveys showing him leading Democrat Julian Beaudion by 12–22 points amid a lightly funded primary challenge from Justin McNeal. The June 2 primary looms as a key test, though an upset would require a major scandal or national anti-GOP wave to threaten the hold, given Democrats' historical struggles in the state.
Riepilogo sperimentale generato dall'AI con riferimento ai dati di Polymarket. Questo non è un consiglio di trading e non ha alcun ruolo nella risoluzione di questo mercato. · AggiornatoSouth Dakota Senate Election Winner
South Dakota Senate Election Winner

Republican
93%

Democrat
8%

Republican
93%

Democrat
8%
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.
Mercato aperto: Oct 13, 2025, 5:04 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 Sen. Mike Rounds' reelection bid for a third term, backed by strong fundraising exceeding $3 million and a Trump endorsement, anchors trader consensus at 92.5% for a GOP victory in the November 3 general election. South Dakota's deep-red status—marked by Rounds' 2020 win with 65.7% and consistent Republican dominance in presidential races—bolsters this edge, with recent Public Policy Polling surveys showing him leading Democrat Julian Beaudion by 12–22 points amid a lightly funded primary challenge from Justin McNeal. The June 2 primary looms as a key test, though an upset would require a major scandal or national anti-GOP wave to threaten the hold, given Democrats' historical struggles in the state.
Riepilogo sperimentale generato dall'AI con riferimento ai dati di Polymarket. Questo non è un consiglio di trading e non ha alcun ruolo nella risoluzione di questo mercato. · Aggiornato
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