Cal. Elec. Code § 2225
(a)
(b) If postal service change-of-address data indicates that the voter has moved to a new residence address in California, the forwardable notice shall be in substantially the following form:
“We have received notification that you have moved to a new residence address in California. Your voter registration record has been updated to this new address. If this is correct, you do not have to take any action. If this is incorrect, you can notify our office by either returning the attached postage-paid postcard, or by calling toll free; you must notify us at least 15 days prior to the next election or you may be required to vote using a provisional ballot.”