12-4-19.1. The confirmation mailing notice shall be a double postcard stating that the voter's registration may be canceled if the card is not returned. In addition, the card shall state that if If the acknowledgement notice sent pursuant to § 12-4-5.3 is returned to the county auditor as undeliverable, the auditor must send a confirmation mailing letter or postcard that: (1) States the voter's registration may be canceled if the letter or postcard is not returned; (2) Lists the voter's information, as it appears in the master registration file; and (3) Provides the following instructions: (a) If the information on the return letter or card is correct, the voter must sign and return the letter or card within thirty days of the date of the postmark on the letter or card, or the voter's registration will become inactive. The card shall also state that if if; (b) If the information on the return letter or card is not correct, the voter shall must send the correct information to update the voter's registration registration, within thirty days of the date of the postmark on the letter or card, or the voter's registration will become inactive. inactive.; and (c) If the letter or card is returned indicating a new address in another county in South Dakota or another state, the card shall serve serves as a cancellation authorization. The card shall also give information on reregistering if the voter has moved to another county or state. The card shall give the information about the voter as it appears in the registration records.