S.C. Code Ann. § 58-3-24: General Assembly members and immediate family ineligible for election to commission.

No member of the General Assembly or member of his immediate family shall be elected to the commission while the member is serving in the General Assembly; nor shall a member of the General Assembly or a member of his immediate family be elected to the Public Service Commission for a period of four years after the member either:

(1) ceases to be a member of the General Assembly; or

(2) fails to file for election to the General Assembly in accordance with Section 7-11-15.