Don't forget -- your state may have additional ID requirements when you go to the polls.
South Dakota says that you need to bring ONE of the following forms of identification:
Your identity may also be confirmed by completing and signing a personal identification affidavit to still be allowed to vote a regular ballot. A member of the election board must verify that picture ID matches you, and name on ID must match name in voter registration list. If poll worker cannot make this determination, they may consider other forms of ID, personal knowledge, or your explanation. If your identity cannot be proven to the satisfaction of the poll worker,you may vote by provisional ballot.
In South Dakota, you don't have to wait until Election Day to vote. You can skip Election Day lines and vote early at a time that's convenient for you.