Food and Agricultural Code § 78225.5

(a) Producers in counties that are not subject to this chapter may petition the commission to be subject to this chapter. If the petition is approved by a two-thirds vote of the members of the commission, the secretary shall conduct an implementation vote of the producers from those counties in accordance with Article 5 (commencing with Section 78270).

(b) If the secretary certifies a favorable vote, all producers from those counties shall be subject to this chapter.