S.C. Code Ann. § 8-13-765
(C) This section does not prohibit government personnel, where not otherwise prohibited, from participating in election campaigns on their own time and on nongovernment premises.
ETHICS COMMISSION OPINIONS
1. In General
Public facilities may be utilized for political meetings or campaign-related activities if they are rented or made available on similar terms to all candidates or committees. Op S.C. St. Ethics Comm., SEC AO92-140, March 25, 1992.