Today in the Newsroom, I'll be talking about super PACs. What are they? Where did they come from? How do they operate? What rules are they under?
They're changing the race - and adding a whole different kind of money game to the 2012 election.
For more info, check out this overview from the Congressional Research Service.
Track super PAC spending here, from the non-partisan Center for Responsive Politics.
Our terrific political researcher Rob Yoon gave a great explanation and some figures a few days ago here.
And be sure to check out this story from our partners at Time.com, "Attack of the super PACs" (subscription required for now).
What do you think of the super PACs and their spending blitz?