623. Every person is guilty of an offence who(1) accepts or executes an order for election expenses with the knowledge that it is not given or authorized by the official agent of an authorized party or independent candidate, or in his name by his deputy or the advertising agency authorized by him, where such is the case, or in the case of an election expense contemplated in section 452, by the official representative of an authorized party or his delegate;
(2) claims or accepts, for goods or services all or part of the cost of which constitutes an election expense, a price he knows to be different from the regular price for similar goods or services outside the election period; or who
(3) refuses to be paid for goods or services all or part of the cost of which constitutes an election expense, unless the service provided consists in work contemplated in paragraph 1 of section 428.
For the purposes of this section, the expression “election expenses” includes expenses referred to in paragraph 9 of section 453 and the expression “official agent” includes a private intervenor within the meaning of Division VIII.1 of Chapter XIII of Title I, if the private intervenor is an elector, and the representative of such an intervenor if the private intervenor is a group of electors.