The nonprofit formed out of President Obama's reelection campaign raised $8.2 million in the second quarter of 2012.

That's substantially more than Organizing for Action took in during the first three months of the year. After launching in mid-January, the group raised $4.9 million by the end of March. 

The group's top donors are Chicago media mogul Fred Eychaner and hedge funder/computer scientist David Shaw, both of whom gave half a million dollars. But OFA likes to emphasize that  the organization has 237,000 donors, and that its average contribution is $55.

"In just our second quarter, OFA more than doubled the number of donors that have stepped up and taken ownership of the future of this organization," an official with the group said.

Despite its connections to the White House and control of the Obama campaign's immense data network, OFA has struggled in turning its grass-roots activity into legislative success on issues like gun control.

The group also cut its fundraising goal for the year from $50 million to half that after slower-than-expected fundraising. OFA does not accept corporate donations, a decision made after criticism from campaign finance reform advocates.