California Elections Code
(a) All vote by mail ballots cast under this division shall be voted on or before the day of the election. After marking the ballot, the vote by mail voter shall do any of the following: (1) return the ballot by mail or in person to the elections official from whom it came, (2) return the ballot in person to a member of a precinct board at a polling place within the jurisdiction, or (3) return the ballot to the elections official from whom it came at a vote by mail ballot drop-off location, if provided pursuant to Section 3025. However, a vote by mail voter who is unable to return the ballot may designate his or her spouse, child, parent, grandparent, grandchild, brother, sister, or a person residing in the same household as the vote by mail voter
to return the ballot to the elections official from whom it came or to the precinct board at a polling place within the jurisdiction. The ballot must, however, be received by either the elections official from whom it came or the precinct board before the close of the polls on election day.
(b) The elections official shall establish procedures to ensure the secrecy of a ballot returned to a precinct polling place and the security, confidentiality, and integrity of any personal information collected, stored, or otherwise used pursuant to this section.
(c) On or before March 1, 2008, the elections official shall establish procedures to track and confirm the receipt of voted vote by mail ballots and to make this information available by means of online access using the county’s elections
division Internet Web site. If the county does not have an elections division Internet Web site, the elections official shall establish a toll-free telephone number that may be used to confirm the date a voted vote by mail ballot was received.
(d) The provisions of this section are mandatory, not directory, and a ballot shall not be counted if it is not delivered in compliance with this section.
(e) Notwithstanding subdivision (a), a vote by mail voter’s ballot shall not be returned by a paid or volunteer worker of a general purpose committee, controlled committee, independent expenditure committee, political party, candidate’s campaign committee, or any other group or organization at whose behest the individual designated to return the ballot is performing a service. However, this
subdivision does not apply to a candidate or a candidate’s spouse.