S.D. Codified Laws § 46A-6-7
The board of directors shall submit the contract referred to in § 46A-6-6 to the electors of the irrigation district at a general election, or at a special election called for that purpose. If a special election is called for that purpose, notice of election shall be given, the election shall be conducted, and the votes shall be canvassed, so far as practicable, in the manner provided for elections held for the purpose of voting upon the issuance of bonds. The ballots at the election shall have printed on the ballots "For the approval of contract for drainage of contiguous lands outside the boundaries of the irrigation district," and "Against approval of contract for drainage of contiguous lands outside the boundaries of the irrigation district." The notice of election need not give the entire contract. It is sufficient if the notice states in a general way the substance of the contract. If a majority of the voters voting on the proposition vote for approval of the contract, the board of directors may enter into the contract.
SDCL 46A-6-7