Cal. Gov. Code § 34457

After the charter prepared by the charter commission has been filed in the office of the clerk of the governing body of the city or city and county pursuant to Section 34455, the proposed charter shall be submitted to the voters of the city or city and county at the next established statewide general, statewide primary, or regularly scheduled municipal election date pursuant to Section 1200, 1201, or 1301 of the Elections Code, provided there are at least 95 days before the election.