The governing body shall elect from its own members a chairman and vice chairman, whose terms of office shall be two years, and who shall be subject to reelections, except that a new chairman or vice chairman may be elected by the governing body before the expiration of the two-year term for the fulfillment of that two-year term.
Source:
Section 66906.3, https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=GOV§ionNum=66906.3..