California Code, Elections Code - ELEC § 18560

(a) Not being entitled to vote at an election, fraudulently votes or fraudulently attempts to vote at that election.

(b) Being entitled to vote at an election, votes more than once, attempts to vote more than once, or knowingly hands in two or more ballots folded together at that election.

(c) Impersonates or attempts to impersonate a voter at an election.