S.D. Codified Laws § 2-7-22 (2026)
The conviction of a member of the Legislature of any crime defined in § 22-12A-17 or 22-12A-18 involves as a consequence, in addition to the punishment prescribed therein, a forfeiture of his office and disqualifies him from ever thereafter holding any public office under this state.
Source: SDC 1939, § 13.1012.