CPI:

Liberals may blame conservatives for the ongoing surge of political “dark money” dominating the 2014 midterm elections. But Democrats are now taking full advantage of these secretive, free-wheeling political behemoths, while at the same time, bemoaning their influence.

At the forefront: the nonprofit Patriot Majority USA, which is providing Democrats with a countervailing force against the political machine of conservative billionaires Charles and David Koch while using a similar playbook.