SDCL § 49-1-2: Election of public utilities commissioners--Qualifications and term of office--Vacancies.

The Public Utilities Commission shall be comprised of three commissioners. Each commissioner shall be elected from, and represent, the state at large. At each general election there shall be elected one Public Utilities Commissioner having the qualifications prescribed by law. Each commissioner shall hold office for a term of six years from the first Tuesday after the first Monday in January following his election, until his successor is elected and qualified.