Cal. Pub. Util. Code § 30740

All district elections shall be held in accordance with the provisions of the Elections Code of the State of California, as the same now exist or may hereafter be amended, for the holding of elections in general law cities insofar as the same are not in conflict with this part. Pursuant to the Elections Code, all district elections shall be consolidated with either a statewide general election or a statewide direct primary election.