Cal. Elec. Code § 13206.5

(2) On the ballot used in a statewide general election in each year evenly divisible by the number four, following the portion of the ballot for party-nominated offices, the same style of box described in paragraph (1) shall appear and within the box in the same style and point size of type shall be printed “Voter-Nominated and Nonpartisan Offices.” Immediately below that phrase within the same box shall be printed the following: “All voters, regardless of the party preference they disclosed upon registration, or refusal to disclose a party preference, may vote for any candidate for a voter-nominated or nonpartisan office. The party preference, if any, designated by a candidate for a voter-nominated office is selected by the candidate and is shown for the information of the voters only. It does not imply that the candidate is nominated or endorsed by the party or that the party approves of the candidate. The party preference, if any, of a candidate for a nonpartisan office does not appear on the ballot.”

(b) On the ballot used in a statewide general election in each even-numbered year that is not evenly divisible by the number four, immediately below the instructions to voters, there shall be a box not less than one-half inch high enclosed by a heavy-ruled line the same as the borderline. This box shall be as long as there are columns for the ballot and shall be set directly above these columns. Within the box shall be printed the words “Voter-Nominated and Nonpartisan Offices.” Immediately below that phrase within the same box shall be printed the following: “All voters, regardless of the party preference they disclosed upon registration, or refusal to disclose a party preference, may vote for any candidate for a voter-nominated or nonpartisan office. The party preference, if any, designated by a candidate for a voter-nominated office is selected by the candidate and is shown for the information of the voters only. It does not imply that the candidate is nominated or endorsed by the party or that the party approves of the candidate. The party preference, if any, of a candidate for a nonpartisan office does not appear on the ballot.”