If the deadline for filing an election protest provided in this chapter falls on a legal holiday, then the deadline extends to the next regular business day that is not a legal holiday. For purposes of this section, "next regular business day" means a day that is not a Saturday, Sunday, or legal holiday.
Election protest deadlines
S.C. Code Ann. § 7-17-110, under Title 7, Chapter 17.
S.C. Code Ann. § 7-17-110