South Dakota U.S. Senate S-SD-2026 · Class 2 · Regular cycle

Open in research → Editorial as of Apr 22 · FEC through Mar 31
General 2026-11-03
R Primary 2026-06-02 (held)
Runoff 2026-07-28
Filing Deadline 2026-03-31 (held)
Cook Political Report
Solid R
As of date pending
Sabato's Crystal Ball
Safe R
As of date pending
Polymarket
R 88¢
D 3¢
Refreshed today
R+15
Cook PVI
Incumbent
Mike Rounds
Republican · Running
▸ Watch

R+15 PVI. Rounds running for third term.

Top contenders

Mike Rounds
Republican
● Incumbent

Republican candidate for the South Dakota U.S. Senate seat.

FEC Receipts — Cycle Total
$2,432,354
Through Mar 31, 2026
Source: FEC bulk data · api.open.fec.gov/v1/candidate/S4SD00049/
12-wk spend
Justin McNeal
Republican
● Candidate

Republican candidate for the South Dakota U.S. Senate seat.

FEC Receipts — Cycle Total
$1,555
Through Mar 31, 2026
Source: FEC bulk data · api.open.fec.gov/v1/candidate/S6SD01133/
12-wk spend
Julian Beaudion
Democrat
● Candidate

Democrat candidate for the South Dakota U.S. Senate seat.

FEC Receipts — Cycle Total
$192,473
Through Mar 31, 2026
Source: FEC bulk data · api.open.fec.gov/v1/candidate/S6SD01125/
12-wk spend

Republicans

Mike Rounds
Republican
● Incumbent

Republican candidate for the South Dakota U.S. Senate seat.

FEC Receipts — Cycle Total
$2,432,354
Through Mar 31, 2026
Source: FEC bulk data · api.open.fec.gov/v1/candidate/S4SD00049/
12-wk spend
Justin McNeal
Republican
● Candidate

Republican candidate for the South Dakota U.S. Senate seat.

FEC Receipts — Cycle Total
$1,555
Through Mar 31, 2026
Source: FEC bulk data · api.open.fec.gov/v1/candidate/S6SD01133/
12-wk spend

Democrats

Julian Beaudion
Democrat
● Candidate

Democrat candidate for the South Dakota U.S. Senate seat.

FEC Receipts — Cycle Total
$192,473
Through Mar 31, 2026
Source: FEC bulk data · api.open.fec.gov/v1/candidate/S6SD01125/
12-wk spend

Other parties

Brian Bengs
Independent
● Candidate

Independent candidate for the South Dakota U.S. Senate seat.

FEC Receipts — Cycle Total
$564,716
Through Mar 31, 2026
Source: FEC bulk data · api.open.fec.gov/v1/candidate/S6SD01117/
12-wk spend