SD
South Dakota Registration Deadlines
Register to vote in South Dakota before the deadlines below to participate in upcoming elections.
Online
Not available
Not available in South Dakota
15 days before election
Postmarked by deadline
In-Person
15 days before election
Important Note
No online registration available
Upcoming Elections in South Dakota
2026 Primary Elections
99 days
Tuesday, June 2, 2026
Mail: May 18
2026 Midterm Elections
253 days
Tuesday, November 3, 2026
Mail: Oct 19
Official Information
South Dakota Voter Registration
Last updated: January 15, 2025
Ready to Register?
Visit your state's official election website to register to vote or check your registration status.
Register NowSouth Dakota Features
No same-day registration
No automatic registration
No online registration