SDCL § 58-5-39: Bylaws of domestic mutual insurer--Adoption, modification, and revocation.

The initial board of directors of a domestic mutual insurer shall adopt bylaws, subject to the approval of the insurer's members at the next succeeding meeting by a two-thirds vote of those present in person or by proxy. The members shall have power by a two-thirds vote of those present in person or by proxy to make, modify, and revoke bylaws.