California Political Mail Regulations
Your Question: Is there a law in California that restricts the use of Direct Mail (snail mail) by politicians?
My Answer: I spent quite a bit of time researching this question, and had a hard time finding a summary of California law. And, while I’m not an attorney, my conclusion at the end of this research is that there may not be regulations specific to California that govern political direct mail.
With that said, there are federal rules that govern campaign spending, and marketing spend in particular. Specifically, the Bi Partisan Campaign Reform Act (BCRA), enacted in 2002 provides specifics. Here’s a link to the complete act, including all regulations that govern “Electioneering communications.”
And, for a little more info on this Act, I found this link to be pretty useful. Written in plain English, it helps interpret the Act.
Finally, I thought it might be helpful to search through some sites that specifically cover California politics. I really liked this site, that is an excellent resource for information on San Francisco politics, and (perhaps even more valuable for your research) also includes an archive of political direct mail.
I hope that this information is helpful to you. And, if any readers have more input on California laws governing direct mail, please do comment.