California Code, Elections Code - ELEC § 2209

(a) For conservatorships established pursuant to Division 4 (commencing with Section 1400) of the Probate Code, the court investigator shall, during the yearly or biennial review of the conservatorship as required by Chapter 2 (commencing with Section 1850) of Part 3 of Division 4 of the Probate Code, review the person's capability of communicating, with or without reasonable accommodations, a desire to participate in the voting process.

(b) If the person has been disqualified from voting by reason of being incapable of communicating, with or without reasonable accommodations, a desire to participate in the voting process, or by reason of being incapable of completing an affidavit of voter registration, the court investigator shall determine if the person continues to be incapable of communicating, with or without reasonable accommodations, a desire to participate in the voting process, and the investigator shall so inform the court. If the investigator determines that the person continues to be incapable of communicating, with or without reasonable accommodations, a desire to participate in the voting process, a court hearing on the issue is unnecessary. If the investigator finds that the person is not incapable of communicating, with or without reasonable accommodations, a desire to participate in the voting process, the court shall hold a hearing to determine if, by clear and convincing evidence, the person cannot communicate, with or without reasonable accommodations, a desire to participate in the voting process. Unless the person is found incapable of communicating that desire, the person's right to register to vote shall be restored, and the court shall so notify the Secretary of State and the county elections official in the format prescribed by the Secretary of State.

(c) If the person has not been found incapable of communicating, with or without reasonable accommodations, a desire to participate in the voting process, and the court investigator determines that the person is no longer capable of communicating that desire, the investigator shall so notify the court. The court shall hold a hearing to determine if, by clear and convincing evidence, the person cannot communicate, with or without reasonable accommodations, a desire to participate in the voting process. If the court determines that the person cannot communicate that desire, the court shall order the person to be disqualified from voting pursuant to Section 2208, and the court shall so notify the Secretary of State and the county elections official in the format prescribed by the Secretary of State.

(d) This section shall remain in effect only until January 1, 2024, and as of that date is repealed.