South dakota constitution
Article XXIII: amendments and revisions of the constitution
Section 2

A convention to revise this Constitution may be called by a three-fourths vote of all the members of each house. The calling of a constitutional convention may be initiated and submitted to the voters in the same manner as an amendment. If a majority of the voters voting thereon approve the calling of a convention, the Legislature shall provide for the holding thereof. Members of a convention shall be elected on a nonpolitical ballot in the same districts and in the same number as the house of representatives. Proposed amendments or revisions approved by a majority of all the members of the convention shall be submitted to the electorate at a special election in a manner to be determined by the convention.