S.D. Codified Laws § 12-4-6 (2026)
An applicant for registration shall answer questions and sign the oath as required on the form prescribed by the State Board of Elections. An applicant for registration at a driver's license station shall also sign a signature card prescribed by the Department of Public Safety. This signature shall be digitized and used to prepare the registration card as provided in § 12-4-5. If an applicant is unable to write his or her name, the applicant shall make a mark, the applicant's name being written near such mark, and written by a person who writes his or her own name as a witness.
Source: SL 1961, ch 92 , § 13; SL 1969, ch 83 , § 4; SL 1974, ch 118 , § 8; SL 1975, ch 119 , § 13; SL 1985, ch 107 , § 2; SL 1994, ch 107 , § 8; SL 2004, ch 17 , § 8.