S.C. Code Ann. § 7-17-60: Right to and notice of appeal from decision of county board.

The decision of the county board may be appealed to the State Board of Canvassers by any candidate adversely affected thereby. Notices of such appeal and the grounds thereof shall be made not later than noon Monday next following such decision by serving such notices on the chairman of the State Board. Provided, that service may be perfected by depositing at the office of the Chief of the State Law Enforcement Division a copy of the grounds of appeal. A sufficient number of copies to be served upon all candidates in the protested race shall also be delivered to the county sheriff. Such officers shall take all steps necessary to deliver the notices to the respective parties.