CA Pub Util Code Section 11643.2

The board of supervisors or any member or members of the board authorized by the board, or any individual voter or bona fide association of citizens entitled to vote on the district formation proposition, or any combination of such voters and associations of citizens, may file a written argument for or a written argument against the proposed district formation. Arguments shall not exceed 300 words in length and shall be filed with the officials in charge of conducting the election not less than 54 days prior to the date of the district formation election.