S.D. Codified Laws § 9-20-16 (2026)
The auditor or clerk shall preserve all petitions invoking the referendum filed in his office for a period of at least two years, during which time such petitions shall be open to public inspection upon reasonable request.
Source: SL 1899, ch 94 , § 7; RPolC 1903, § 1220; SL 1913, ch 119 , § 44; RC 1919, § 6259; SDC 1939, § 45.1016.