from my original Bloomberg link in post about FB
'Politicians running for office can be lucrative ad buyers. For those who spend enough, Facebook offers customized services to help them build effective campaigns, the same way it would Unilever NV or Coca-Cola Co. ahead of a product launch.
While Facebook declined to give the size of its politics unit, one executive said it can expand to include hundreds during the peak of an election, drawing in people from the company’s legal, information security and policy teams.'
It is harder to find information about FB's data sales policies (which are very opaque unless you speak to people high up in marketing large companies and their activities). FB's ad platform information is pretty transparent, but the quarterly numbers don't really add up for me based on spend by large firms like Procter & Gamble etc in those areas...