Here's a brief video guide to understanding the super PACs, dark money groups and shadow parties that are already gearing up for the next campaign season (didn't we just finish one?)

What happened after voters found out about Target's political donations shows why near real-time disclosure is so important. Note to Chief Justice Roberts: we are not even close to that now.

Here's some of our favorite clips from Bill's interview with investigative journalists Kim Barker and Andy Kroll on dark money in the 2014 mid-term elections.

If you feel like politicians don't have your back, you should watch this.

With federal action stymied by politics, activists are turning to the "laboratories of democracy."

Two investigative journalists talk to Bill about the role of dark money -- and the wealthy donors behind it -- in this year's midterm elections.

The Kochs and their allies have built up a complex network of social welfare organizations, which spent more than $383 million in the run-up to the 2012 election alone.