S.D. Codified Laws § 47-16-9
Current with legislation signed by the governor on or before 3/6/2024
Any action which may be taken at a member meeting of a cooperative, may be taken without a meeting if a writing setting forth and approving the action taken shall be signed by a majority of the members entitled to vote on such action. In such cases, such consent shall have the same force and effect as if a meeting had been held.
SDCL 47-16-9