South Dakota primary election
June 27, 2026
- Election type: primary
- Region: South Dakota
- Description: South Dakota Republican Party state convention
Visit Ballotpedia.org(Opens in a new window) to learn what you're voting on this election.
Key deadlines in South Dakota
Voter registration deadlines
- By mail: Received by 15 days before Election Day
- In person: 15 days before Election Day
Absentee ballot request deadlines
- By mail: Received by 1 day before Election Day
- In person: 1 day before Election Day
Absentee ballot return deadlines
- By mail: Received by Election Day
- In person: Received by Election Day
Voting dates
- Early voting starts: 46 days before Election Day
- Early voting ends: 1 day before Election Day
- Election Day: June 27, 2026