Super PACs have no limits on what they can raise from individuals, corporations or labor unions. Here is a look at wealthy individuals who have contributed at least $1 million to the major "super" political action committees.
Are you a bit confused about super PACS, those new political operations that have somehow taken over the U.S. election process? Well, in the spirit of Schoolhouse Rocks, ProPublica brings you "Oh, Super PACs," a 1970s-style video that answer all your questions.
Pundits have lately focused on the growth of super PACs -- and the power of the mega-rich men who fund them -- but the current business-sponsored presidential contest isn't unusual: There's a long and rich tradition of election-buying in American history.
Casino mogul Sheldon Adelson has stirred up controversy recently for his $10 million in political help to the Newt Gingrich campaign -- but it's all perfectly legal. Still, with billionaires and corporations now able to make almost unlimited political donations, is the presidency for sale?