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  1. Senate

South Dakota Senate winner?

Resolves by winning party
2
Chance
Mike Rounds
Republican party
91.8%
▼ 1

Mike Rounds

Republican party
91.8%
▼ 1
Brian Bengs
Independent
7%
▼ 2

Brian Bengs

Independent
7%
▼ 2
Julian Beaudion
Democratic party
<1%

Julian Beaudion

Democratic party
<1%
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South Dakota Senate winner?

Mike Rounds

Odds
93% chance
Max payout
Nov 3, 2027
$0
Bengs
Nov 3 ·R +10.5margin forecast
Rounds
$368,224 vol
Race Intel

South Dakota Senate Race 2026

ElectionNov 3, 2026General election
IncumbentMike Rounds (R)Running for re-election

South Dakota Senate Candidates and Fundraising

CandidatePollsRaisedSmall Donors
  • Mike RoundsR46.4%
    46.4%
    $3.2M
    1.2%
    $3.2M raised·1.2% small donors
  • Brian BengsI—
    —
    $782.1K
    61%
    $782.1K raised·61% small donors

Rounds vs. Bengs Polls vs. Kalshi Odds

Polling averageRounds 46.4%No head-to-head polling average yet
Kalshi oddsRounds 92%Bengs 7% · $353.2K traded
Polling averages · Fundraising: FEC filings · Small-donor ≤ $200. This does not include third party expenditures.

Past South Dakota Election Results

Past presidential elections

2024R +29.2%2020R +26.2%