Where were you when the news hit that right-wing Federalist Society prince of darkness Leonard Leo had been given $1.6 billion by a fellow anti-abortion nutcase nobody had ever heard of named Barry Seid? It was the single largest political donation ever recorded in this country, an unknowably large .
Campaign contributions can be a confusing web of super PACs, FEC filings and dark money. Here's how campaign finance works and how campaign donations can benefit both candidates and donors.