The county elections official of any county in this state may receive the affidavit of registration of any elector who resides or claims residence in another county in this state. The affidavit shall be forwarded to the county elections official of the county in which the elector resides. The county elections official of the county in which the elector resides shall use the affidavit of registration received from the other county as his or her permanent record of registration.
Registration by this method shall be effective for all elections occurring 15 or more days after receipt of the affidavit of registration by the county elections official to which the affidavit is mailed or delivered by the elector.
Ca. Elec. Code § 2114