CA SB900

Mass mailings must disclose the top 5 contributors (of $50,000 or more) to the paying committee, while other political advertisements continue to require disclosure of only the top 3 contributors

Yard signs, billboards, and electronic media advertisements may use shortened committee names and approved abbreviations for top contributor names, including using "CA" for California, "&" for "and," and other standardized abbreviations

Independent expenditure advertisements supporting or opposing candidates must include shortened disclosure statements: "Not paid for by a candidate" or "Not paid for by a candidate for this office" instead of longer previous versions

Top contributors on print advertisements must be displayed in bold type, may be separated by bullet points or numbered (1, 2, 3), and disclosures must appear in a specific order: Section 84514, Section 84506.5, Section 84502, then Section 84503

Requires a two-thirds vote of each legislative house to pass, as it amends the Political Reform Act of 1974