S.C. Code § 14-9-10
Whenever one third of the qualified registered electors of any county in this State shall file a petition with the clerk of the circuit court of such county praying for an election to be held in such county on the question of the establishment of a county court therein, the clerk shall within ten days make an order thereon and serve the same on the commissioners of election of such county requiring the commissioners to hold an election upon the question of establishing a county court in such county not later than sixty days nor earlier than forty days thereafter, after first giving at least thirty days' notice thereof in the newspapers of such county. The petition shall be accompanied by a certificate of the board of registration of the county that the names appearing upon the petition constitute one third of the qualified registered electors of such county.
S.C. Code § 14-9-10