California Code, Elections Code - ELEC § 18380

(1) Remove or destroy any of the supplies or other conveniences placed in the voting booths or compartments for the purpose of enabling the voter to prepare his or her ballot.

(2) Remove, tear down, or deface the cards printed for the instruction of voters.

(3) Remove, tear, mark, destroy, or otherwise deface any voter list or roster with the intent to falsify or prevent others from readily ascertaining the name, address, or political preference of any voter, or the fact that a voter has or has not voted.

(4) Remove, tear down, or deface the signs identifying the location of a polling place or identifying areas within 100 feet of a polling place.