Cathy Antunes is an education activist in Sarasota, Florida. When she ran for local office, she realized that the public doesn’t pay much attention to local elections. This creates a huge opportunity for extremists with money to win local elections, especially School Board elections.
She wondered who was funding the campaigns of extremists. The Supreme Court’s decision Citizens United gutted limits on campaign contributions, and extremists took advantage of the new situation.
She started digging and found large amounts of money flowing into Florida state and local elections from shell corporations created by out-of-state funders. In other words, the funders were using Dark Money, money whose origins were hard to trace.
She turned her research into an ebook that is on the internet for free.
I hope you will open the link and read the book.
Diane Ravitch's blog 
Two things came to my mind in reading through this money maze document. First, The Supreme Court’s Citizens United decision was catastrophic to democracy and local, self-determination. It turns elections into the battle of the billfold. The mess we face today is the direct result of this decision. Second, stuffing mailboxes will notices is an illegal, federal offence. I know this from being a striking teacher in the 1970s. We handed out flyers locally and were told to never touch the mailbox. We were able to put notices in or under doors or hand them directly to residents. BTW, it’s still a federal offence except for newspapers apparently. https://about.usps.com/news/state-releases/tx/2010/tx_2010_0909.htm
Newsweek (4-22-2023) did a better job in its review of Mary Jo McConahay’s new book about “dark money” and the Koch family than the NYT did a month prior. Neither publication libeled McConahay as anti-Catholic. That’s because she is Catholic and clearly pained to write what she writes. The title of the Newsweek interview is, “How Catholic Bishops Influence the Supreme Court.” McConahay said in the Newsweek interview that she doesn’t know how subtle what the Bishops are doing is anymore and “how extremely right wing they are”
The omission that is interesting in both the NYT review and Newsweek interview is the absence of the identification of the almost 50 state Catholic Conferences. Until I have the opportunity to read MCConahay’s book, I won’t know if she included info. about Georgetown University’s ‘s influence in D.C.