S.C. Code Ann. § 4-7-30

When there is no established polling place or voting place in a section proposed to be incorporated in a new county the petitioners shall name a voting place or places in their petition, and the Governor shall in his order of election designate such place or places as the voting place or places, and managers of election shall be appointed therefor, and all electors otherwise qualified shall be allowed to vote at such voting place or places so named as may be most convenient, as legally as if their registration certificates called for that place by name.