iWatch: “The top two super PACs — the pro-Mitt Romney Restore Our Future and Karl Rove’s American Crossroads — have raised nearly $24 million in contributions from companies so far this election cycle, a Center for Public Integrity analysis has found. Donors include hedge funds, energy companies, dietary supplement makers and even a popcorn manufacturer. The list includes a handful of Fortune 500 and other publicly traded corporations, but donors are more likely to be privately held businesses, often organized as limited partnerships or limited liability companies. Businesses account for only about 5 percent of donations to the four most prominent Democratic super PACs. Labor unions, which were also given greater spending freedom thanks to the Citizens United decision, make up a much larger percentage of receipts.”