Restore Our Future, the super PAC supporting Mitt Romney’s presidential candidacy, raised $7 million in January, topping off its deep reservoir of funds and allowing the group to flood media markets from Sioux City to Sarasota with some $14 million in advertising. Its FEC disclosure on Monday revealed that its extensive effort to elevate Romney and bury the competition relied on a set of donors that runs the gamut from famous heirs and CEOs to the most opaque and controversial kind of corporate interests. Unlike its competitors, Restore Our Future doesn’t have a lone high-profile benefactor, like Newt Gingrich has...