In addition to any other method provided by law, ordinances may be enacted by any district pursuant to this article, except that this article shall not apply to irrigation districts, to a district formed under a law that does not provide a procedure for elections, to a district formed under a law which does not provide for action by ordinance, to a district governed by an election procedure that permits voters, in electing the district’s directors or trustees, to cast more than one vote per voter, or to a district in which the directors are empowered to cast more than one vote per director when acting on any matter.