How do states rank on campaign contribution disclosure?

During a presidential election — particularly one as compelling and unpredictable as this one — it can be easy to lose track of elections happening at the state level. It can be even easier to forget about state-level campaign finance, given the truly massive amounts spent at the federal level. But millions of dollars will be spent on state and local elections this year, too, and it’s just as important to track where this money comes from.