California Code, Elections Code - ELEC § 9166

(a) If more than one argument for or more than one argument against any county measure is submitted to the county elections official within the time prescribed, the county elections official shall select one of the arguments in favor and one of the arguments against the measure for printing and distribution to the voters. In selecting the argument, the county elections official shall give preference and priority in the order named to the arguments of the following:

(b) In order to enable the county elections official to determine whether it qualifies as a bona fide association of citizens, an organization or association submitting an argument for or against a county measure shall submit with its argument a copy of one of the following:

(c) In selecting an argument from among bona fide associations of citizens, the county elections official shall not consider the type of documentation submitted pursuant to subdivision (b) or the form of the association.