S.C. Code Ann. § 8-13-1304
A committee, except an out-of-state committee, which receives or expends more than five hundred dollars in the aggregate during an election cycle to influence the outcome of an elective office or ballot measure must file a statement of organization with the State Ethics Commission no later than five days after receiving the contribution or making the expenditure. An out-of-state committee which expends more than five hundred dollars in the aggregate during an election cycle to influence the outcome of an elective office or a ballot measure must file a statement of organization with the State Ethics Commission no later than five days after making the expenditure.