S.D. Codified Laws § 36-34-4 (2026)
The Governor may remove any member of the board for cause. If there is a vacancy on the board the Governor shall appoint a new member to serve the unexpired term. No member of the board may serve for more than three successive full terms. The appointment to an unexpired term is not considered a full term.
Source: SL 2004, ch 253 , § 5; SL 2005, ch 199 , § 78.