S.C. Code Ann. § 6-11-2050
(A) Upon the filing of a petition, it is the duty of the commissioners of election of a county to:
(B) The commissioners of election shall within thirty days of the receipt of a petition deliver to the governing body of the district a certificate showing the number of qualified electors within the district and the number of qualified electors residing in the district that have signed the petition. Signatures on the petition are valid only if:
(2) they are of persons ascertained to be a qualified elector residing in the district as shown on the voter registration books.
Signatures on the petition accompanied by illegible names and addresses are void and must be disregarded in determination of the number of qualified electors residing in the district that have signed the petition.
HISTORY: 1998 Act No. 397, Section 3.