Before each voter enters the voting booth, the precinct board shall inform him or her how to operate the voting device. If a marking or punching device is used, the voter shall be instructed to use only that device. The voter shall also be instructed how to fold the ballot and place it in the envelope. If any voter, after entering the booth, asks for information regarding the operation of the machine or device, the precinct board shall give him or her the information.
Ca. Elec. Code § 14272