S.C. Code § 7-13-1110
At the close of the election the managers and clerk shall immediately proceed publicly to open the ballot boxes and count the ballots therein and shall continue such count, without adjournment or interruption, until it is completed. They shall then make and sign such statement of the result thereof as the nature of the election shall require. At the completion of the vote counting a duplicate of the statement and return of votes must be published by posting it in a conspicuous site at the polling places, except in counties where vote recorders are used for voting.
Managers of election are authorized to use additional volunteer personnel in counting the ballots. None of such personnel shall be a candidate or watcher for a candidate for an office voted on in the election and shall be required to take the following oath prior to assuming their duties: "I do solemnly swear or affirm that I am not a candidate or watcher in this election, am a qualified elector of this county, that I will count the ballots entrusted to my care in a fair and impartial manner, and make to the best of my ability a correct tabulation of the results." The managers shall be required to make a list of all such counters and turn such list in with other election material. The provisions of this section shall not apply to the counting of ballots at any precinct using vote recorders which require the ballot cards to be counted with the use of a tabulating machine.
S.C. Code § 7-13-1110