To register in South Dakota you must:
Any registered South Dakota voter may apply for an absentee ballot and vote by mail.
45 days before Election Day.
1 day before Election Day.
You must provide one of the following forms of photo ID when you vote early or on Election Day:
If you don’t have any of these when you vote early or on Election Day, you can fill out an affidavit confirming your identity and still be allowed to vote.
You must include a copy of one of the following forms of photo ID with your absentee application form when you mail it: