The amount which may be spent in aid of the candidacy of any qualified candidate for Governor in a primary election shall not exceed $7,300,000. The amount which may be spent in aid of the candidacy of any qualified joint candidates for Governor and Lieutenant Governor in a general election shall not exceed $15,600,000; but such sums shall not include the traveling expenses of the candidate or candidates or of any person other than the candidate or candidates if such traveling expenses are voluntarily paid by such person without any understanding or agreement with the candidate or candidates that they shall be, directly or indirectly, repaid to him by the candidate or candidates.
N.J.S. § 19:44A-7