Any person willfully violating any provisions of this chapter relating to the mayor/commission/city manager form of government for which penalties have not otherwise been prescribed shall be guilty of a misdemeanor, and on conviction shall be fined not less than $50.00 nor more than $500.00 or may be sentenced to hard labor for the county for a term not to exceed six months, or both. Furthermore, any candidate for the office of commissioner or mayor, shall be disqualified from holding municipal office for a period of four years from such conviction.