California Code, Elections Code - ELEC § 5001

(a) Holding a caucus or convention at which temporary officers shall be elected and a party name designated. The designated name shall not be so similar to the name of an existing party so as to mislead the voters, and shall not conflict with that of any existing party or political body that has previously filed notice pursuant to subdivision (b).

(b) Filing formal notice with the Secretary of State that the political body has organized, elected temporary officers, and declared an intent to qualify a political party pursuant to either Section 5100 or 5151, but not both. The notice shall include the names and addresses of the temporary officers of the political body.