“Super PAC mega-donors have now given more than a quarter of a billion dollars, with the addition of their August contributions. In another milestone, there are now 89 donors who have each given $1 million or more.

"Overall, super PACs have raised $374 million in the 2012 election cycle, and donors who gave $500,000 or more make up 68 percent of the total.”

(Huffington Post)