S.D. Codified Laws § 33-10-122
Procedure when court members reduced below minimum by peremptory challenge
If exercise of a peremptory challenge reduces the court below the minimum number of members required by § 33-10-61 , the parties shall, notwithstanding the provisions of §§ 33-10-87 to 33-10-90 , inclusive, either exercise or waive any remaining peremptory challenge, not previously waived, against the remaining members of the court before additional members are detailed to the court.
Source: SL 2012, ch 175, § 103.