What institution(s) has the power to impose non-criminal sanctions for campaign finance infractions?

National Parliament Electoral ProvisionsAct [1996 EDITION]

Electoral expenses

45.—(1) Each candidate shall submit to the Returning Officer within one monthof the declaration of the result of the election a statement of account,specifying all expenses incurred by him in his election campaign.

(2) If any expenses referred to in subsection (1) amount, in the case of anyindividual candidate to more than fifty thousand dollars, that candidate shall be guilty of an offence and liableto a fine not exceeding one hundred dollars or to imprisonment for a term notexceeding three months, or to both such fine and such imprisonment.