Cal. Food and Agricultural Code § 78901

(a) Within 90 days of the effective date of this chapter, the secretary shall establish a list of producers and vintners in Mendocino County eligible to vote on implementation of this chapter. In establishing the list, the secretary may require that all producers and vintners in Mendocino County submit their names and mailing addresses. (b) The secretary may also require that the information provided include the quantity of winegrapes, wine, or winegrape products produced by each producer and vintner or, in the alternative, may establish procedures for receiving the information at the time of the referendum vote specified in Section 78903. The request for information shall be in writing and shall be submitted to the secretary within 10 days following the receipt of the request. (c) Any producer or vintner in Mendocino County whose name does not appear on the appropriate list may have his or her name placed on the list by filing with the secretary a signed statement identifying himself or herself as a producer or vintner. Failure to be on the list does not exempt the person from paying assessments, and does not invalidate any industry votes conducted pursuant to this chapter. (d) Proponents and opponents of the commission may contact producers and vintners on the lists in a form and manner prescribed by the secretary if all expenses associated with those contacts are paid in advance.