Oct. 2, 2014 | DEMOCRACY | Nonprofit groups, some well known (such as the U.S. Chamber of Commerce and Americans for Prosperity, founded by the Koch brothers) and some obscure (America, Inc., anyone?), have dumped huge sums of anonymous money into every competitive Senate race and many House contests. Here are five eye-opening indicators showing the rapid spread of dark money [defined here] in this year's campaign season – and why it's going to get worse as Election Day approaches.