S.C. Code Ann. § 7-7-15

When a polling place established by statute or ordinance or by an entity allowed by law to establish polling places is changed the entity charged with conducting elections at the polling place shall post at the time of the first election held after the change a notice on or next to the door of the entrance of the previous polling place stating in printing with letters large enough to be read easily by a person with normal vision from a distance of at least twenty feet the location of the new polling place and the address and telephone number of the entity in charge of the conduct of the election.