Any candidate or political committee, authorized by a candidate and created solely for the purpose of influencing an election on behalf of that candidate, which receives any contribution or pledge of five hundred dollars ($500) or more, and any person making an independent expenditure, as defined by this act, of five hundred dollars ($500) or more after the final pre-election report has been deemed completed shall report such contribution, pledge or expenditure to the appropriate supervisor. Such report shall be sent by the candidate, chairman or treasurer of the political committee within twenty-four (24) hours of receipt of the contribution. It shall be the duty of the supervisor to confirm the substance of such report. The report shall be made by telegram, mailgram, overnight mail or facsimile transmission. Any candidate in his own behalf, or chairman, treasurer or candidate in behalf of the political committee may also comply with this section by appearing personally before such supervisor and reporting such late contributions or pledges.