Cal. Food & Agric. Code § 74691

(a) On or before June 30, 1990, the commission shall cause a referendum to be conducted among vintners in the manner specified in Section 74622 to determine whether this chapter shall be reapproved and continued in effect. In determining whether this chapter is reapproved, the director shall find that at least 40 percent of the total number of vintners from the list established by the director participated in the referendum, and that either one of the following has occurred:
1. (1) Sixty-five percent or more of the vintners who voted in the referendum voted in favor of this chapter, and the vintners so voting processed a majority of the volume of winegrapes in the preceding marketing season by all the vintners who voted in the referendum.
2. (2) A majority of the vintners who voted in the referendum voted in favor of this chapter, and the vintners so voting processed 65 percent or more of the volume of the winegrapes in the preceding marketing season by all the vintners who voted in the referendum.
(b) If the director finds that a favorable vote has been given to continue the commission, he or she shall so certify and this chapter or the appropriate portions thereof shall remain in effect. If the director finds that a favorable vote has not been given, he or she shall so certify and declare the operations of this chapter suspended upon expiration of the marketing season. No bond or security shall be required for any such referendum.