S.C. Code Ann. § 17-3-510
(A) There is created in each judicial circuit in the State a Circuit Public Defender Selection Panel, the membership of which is composed of, and must be elected by, the active, licensed attorneys who reside within the counties of each judicial circuit. Each county in each judicial circuit must be represented by at least one member and the remaining members must be determined by equal weighting of county population based on the most recent decennial census and the most recent annual county appropriations to public defender operations according to the following formula:
(2) the weighted values of each county multiplied by the number of remaining members in each Circuit Public Defender Selection Panel determines the number of additional members each county must have on the panel.
Judicial circuits with three or less counties must have five members. Judicial circuits with four counties must have seven members. Judicial circuits with five counties must have nine members.