S.D. Codified Laws § 8-3-10
At the opening of every township meeting the moderator shall state the business to be transacted, and the order in which it shall be entertained, and no proposition to vote a tax shall be acted on out of the order of business as stated by the moderator, and no proposition to reconsider any vote shall be entertained unless such proposition to reconsider is made within one hour from the time such vote was passed, or the motion for such reconsideration is sustained by a number of voters equal to a majority of all the names entered upon the poll list at such election up to the time such motion is made; and all questions upon motions made shall be determined by a majority of the voters voting; and the moderator shall ascertain and declare the result of the votes on each question.
SDCL 8-3-10