Sunlight Foundation

The Romney campaign declined to comment about the weekend events. It also has declined to disclose the names of its top bundlers, the people who gather contributions from a network of friends, business partners and associates—a stance that already is drawing criticism. "When candidates for any office go into a private, secret meeting, it raises a whole host of questions usually having to do with money and politics," said Ellen Miller, co-founder of the Sunlight Foundation, which advocates for transparency in politics. "Bundlers have far more sway over a candidate than individual people who give money do."