Cal. Pub. Util. Code § 29725

The question of the annexation of territory to a special service district shall be canvassed separately for each public agency, or portion thereof, in which an election is held, and the board shall order and declare the territory annexed to the special service district in each public agency, or portion thereof, in which an election is held and in which a majority of those who voted upon the proposition of annexation of territory to the special service district voted in favor of the proposition, and excluding each public agency, or portion thereof, in which an election was held and in which a majority of those who voted upon the proposition of the annexation of territory to the special service district voted against the proposition.