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Senate

South Dakota Senate winner?

Resolves by winning party

2

Chance

Mike Rounds

Republican party

95.5%

▲ 0.9

Mike Rounds

Republican party

95.5%

▲ 0.9

Brian Bengs

Independent

5%

Brian Bengs

Independent

5%

Julian Beaudion

Democratic party

<1%

Julian Beaudion

Democratic party

<1%

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General election · Nov 3, 2026What’s on your ballot?

Enter your address to see every contest and ballot question, with live odds on the ones Kalshi prices.

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South Dakota Senate winner?

Mike Rounds

Dollars$

Odds

96% chance

Max payout

Nov 3, 2027

$0

Bengs

Nov 3 ·R +13.0margin forecast

Rounds

$782,171 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 RoundsR51.4%
51.4%
$3.2M
1.2%
$3.2M raised·1.2% small donors
Brian BengsI—
—
$782.1K
61%
$782.1K raised·61% small donors

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%

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