South Dakota
Mike Rounds (R)
D
Brian Bengs
DEM
R
Mike RoundsINC
REP · U.S. Senator since 2015
No recent public poll logged. · Sabato: Safe R
South Dakota Senate 2026
Brian Bengs vs. Mike Rounds · Mike Rounds (R)
Cook: Solid RSabato: Safe R
Election results · unofficial
All live results →Race insight · September 30, 2026
No public general-election polls have been logged yet for the U.S. Senate race in South Dakota. The Cook Political Report rates it Solid R; Sabato's Crystal Ball rates it Safe R.
Poll trend
Head-to-head
Candidates
Solid R
Candidate background
Full candidate biographies, primary results and campaign history: South Dakota Senate election on Wikipedia ↗. Official candidate lists and certified results come from the South Dakota election office via vote.gov.
Every poll
No public general-election polls logged yet.
Margins under about 4 points are within typical sampling error. See our methodology.
Voting in South Dakota
Check registration deadlines and early or mail voting in South Dakota on vote.gov. See all South Dakota races.
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