Absentee enrollment and absentee voting may not be provided for by party rules or permitted in any primary election, except as provided in Section 7-13-1030 or in Chapter 15 of this Title.
Absentee voting not permitted in primaries; exceptions
S.C. Code Ann. § 7-13-1020, under Title 7, Chapter 13.
S.C. Code Ann. § 7-13-1020