Except for a voter-nominated office at a general election, each voter is entitled to write on the ballot the name of any candidate for any public office, including that of President and Vice President of the United States.
Cal. Elec. Code § 15340
Processing Write-In Votes
Amended by Stats. 2012, Ch. 3, Sec. 44
Official source: California Legislative Information. Reproduced from public-domain California statutes; confirm against the official source for the current text. Not legal advice.