Cal. Const. art. II, § 6
California Constitution Article II, Section 6
(a) All judicial, school, county, and city offices, including the Superintendent of Public Instruction, shall be nonpartisan. (b) A political party or party central committee shall not nominate a candidate for nonpartisan office, and the candidate’s party preference shall not be included on the ballot for the nonpartisan office. (Sec. 6 amended June 8, 2010, by Prop. 14. Res.Ch. 2, 2009. Operative Jan. 1, 2011.)