S.D. Codified Laws § 35-3-8
Current with legislation signed by the governor on or before 3/6/2024
Fifteen percent of the legal voters residing in a municipality may petition for a special election to determine any question subject to local option pursuant to § 35-3-7. If a municipality has a mayor, the number of legal voters is the total number voting in the last preceding election of a mayor, and in other municipalities the number of legal voters is the total number voting in the last preceding regular municipal or township election. The petition shall set forth the question the petitioners submitted, and shall be filed with the city finance officer or township clerk.
SDCL 35-3-8