Cal. Gov't Code § 84504.3
(a) This section applies to an electronic media advertisement if either of the following is true:
(2) The advertisement is paid for by a political party committee or a candidate controlled committee established for an elective office of the controlling candidate, and is either of the following:
(b) An electronic media advertisement that is a graphic, image, animated graphic, or animated image that the online platform hosting the advertisement allows to link to an internet website paid for by a committee shall comply with both of the following:
(2) The advertisement shall include, for the duration of the advertisement, the disclosures required by Section 84514, if any, followed by the disclosures required by Section 84502, if any, followed by the disclosures required by Section 84503, if any, displayed according to the following:
(g) An advertisement in the form of a post, comment, or similar communication made via a form of electronic media that allows users to engage in discourse and post content, or any other type of social media, is not required to include the disclosure provided in subdivision (b) if both of the following apply:
(2)