S.D. Codified Laws § 8-1-23
Except as provided in § 8-1-28, if fifteen percent of the registered voters of any civil township, based upon the total number of registered voters at the last preceding general election, petition the township clerk, the clerk, at the direction of the board of supervisors, shall call an election. The election shall be called in the manner prescribed by law for holding special township meetings and the question shall be submitted, "Shall the civil township organization of __________ township be abolished?" "Yes." "No." The election shall be held within sixty days of the filing of the petition and in the manner provided by law for holding elections for the election of civil township officers. The township clerk shall provide a sufficient number of printed ballots for the proper conduct of the election.
SDCL 8-1-23