On or before the 75th day before an election when electors for the President and Vice President of the United States will be chosen, each political party qualified to participate in the election shall notify the Secretary of State of the names of that party's nominees for the offices of President and Vice President of the United States. If a qualified political party has not held its national convention by the 75th day before the election, the party shall notify the Secretary of State of the names of the party's apparent nominees for the offices of President and Vice President of the United States.
Ca. Elec. Code § 6901.5