S.D. Codified Laws § 12-5-14
The county central committee of a political party is comprised of precinct committeemen and precinct committeewomen of the political party; the state committeemen and committeewomen; the county chairperson, vice-chairperson, and secretary-treasurer or secretary and treasurer; and the elected public officers who reside in the county and other officers as designated by the party's constitution or bylaws. A county central committee of a political party shall form the party organization by electing a county chairperson and other officers as determined by the party's constitution or bylaws. The name and mailing address of the county chairperson shall be certified to the county auditor and state party chairperson immediately following the election of the county chairperson or change of the county chairperson. The name and mailing address of the county officer responsible for the records and reports required under chapter 12-27 shall be certified to the secretary of state immediately following the election. The name and mailing address of the state party chairperson shall be certified to the secretary of state immediately following the election or appointment of the state party chairperson.
SDCL 12-5-14