SDCL § 11-2-46: Form of ballot--Majority vote required.

The vote upon the question of establishing or enlarging a special zoning area shall be by ballot which conforms to a ballot for a statewide question except that the statement required to be printed on the ballot shall be prepared by the state's attorney. If a majority of those voting vote in favor of the establishment or enlargement, the territory is from that time a special zoning area by the name and style specified in the order of the board.