California Code, Elections Code - ELEC § 9300

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.