South Dakota 2026 Primary
Jun 2
2026
Filing Deadline: Mar 31, 2026
Runoff Date:
Jul 28, 2026 — R governor runoff: Doeden (30.6) vs Rhoden (25.2) — no candidate reached the 35% threshold on June 2; first runoff under the 1985 law.
U.S. Senate
Incumbent: R Mike Rounds
Democrat
Julian Beaudion
$228,295 raised
Independent
Brian Bengs
$782,050 raised
Republican
Mike Rounds
Incumbent
Nominee
$3,176,451 raised
Justin McNeal
$10,993 raised
Dollar figures are each campaign’s total funds raised, from FEC filings.
Primary Results
Republican Primary
| Candidate | Votes | % | |
|---|---|---|---|
| Mike Rounds ✓ | 101,471 | 75.8% | |
| Justin McNeal | 32,412 | 24.2% |
Governor
Incumbent: R Larry Rhoden
Democrat
Dan Ahlers
Republican
Larry Rhoden
Incumbent
Toby Doeden
Primary Results
Republican Primary
| Candidate | Votes | % | |
|---|---|---|---|
| Toby Doeden | 41,712 | 30.6% | |
| Larry Rhoden | 34,321 | 25.2% | |
| Dusty Johnson | 31,856 | 23.4% | |
| Jon Hansen | 28,341 | 20.8% |
U.S. House 1 district
SD-AL
At-Large
R
Dusty Johnson
Billy Mawhiney (D)
Nicole Gronli (D)
Dusty Johnson (R)
*
Casey Crabtree (R)
Marty Jackley (R)
Details →