South Dakota
Requirements
Be a United States citizen
Reside in South Dakota
Be at least 18 years old on or before the next election
Not currently serving a sentence for a felony conviction which included imprisonment, served or suspended, in an adult penitentiary system
Not be judged mentally incompetent by a court of law
https://sdsos.gov/elections-voting/voting/register-to-vote/default.aspx
Voter Registration Forms
Online: N/A
Election Info
ID Required: Yes
Same-Day Registration: No
Deadlines
New Voter Registration: October 19
Absentee Ballot request
Ballots have automatically been sent to all voters.
New Absentee Ballot Request: Received by November 2 (send your application earlier to allow for time to cast absentee before election day)