S.D. Codified Laws § 38-22-1.6
The five members of the South Dakota Weed and Pest Control Commission appointed by the Governor shall be selected from a list of nominees presented by the State Association of County Weed and Pest Boards, who shall submit at least three names for each appointment. One member from District I shall reside within the counties of Beadle, Brookings, Brown, Clark, Codington, Day, Deuel, Edmunds, Faulk, Grant, Hamlin, Hand, Hyde, Kingsbury, Marshall, McPherson, Roberts, or Spink; one member from District II shall reside within the counties of Aurora, Bon Homme, Brule, Buffalo, Charles Mix, Clay, Davison, Douglas, Hanson, Hutchinson, Jerauld, Lake, Lincoln, McCook, Miner, Minnehaha, Moody, Sanborn, Turner, Union, or Yankton; one member from District III shall reside within the counties of Bennett, Campbell, Corson, Dewey, Gregory, Haakon, Hughes, Jackson, Jones, Lyman, Mellette, Potter, Stanley, Sully, Todd, Tripp, Walworth, or Ziebach; and one member from District IV shall reside within the counties of Butte, Custer, Fall River, Harding, Lawrence, Meade, Oglala Lakota, Pennington, or Perkins; and one additional South Dakota resident shall be appointed by the Governor to serve as an at-large member of the commission selected from a list of names representing one individual from each district. The term of each member appointed pursuant to this section shall be for no more than two consecutive four-year terms with the exception of the initial appointments which shall be made as follows: District I for a one-year term, District II for a two-year term, District III for a three-year term, and District IV for a four-year term. As the term of any gubernatorial member expires, a new member shall be appointed from the district for a period of four years. If a vacancy occurs in any of the terms, the Governor may appoint a successor in the manner described in this section to complete the term.
SDCL 38-22-1.6