Washington (CNN) - Newt Gingrich outpaced his potential 2012 rivals in fundraising during the last three months of 2010 thanks to his influential 527 group "American Solutions for Winning the Future," which can solicit unlimited corporate and individual contributions.
Gingrich's K Street-based organization, which houses most of his staff and political operation, raised over $3.8 million between October and the end of December, and almost $14 million over the course of the entire year, according to new filings with the IRS.
His political action committee, American Solutions PAC, which is subject to tighter campaign finance regulations, raised roughly $425,000 during the same period.
The rest of the early 2012 field - including Mitt Romney, Sarah Palin and Tim Pawlenty - have relied on a network of PACs to raise money, fund their political operations and assist other Republican candidates.
Based on PAC fundraising alone during the final three months of 2010, Palin outraised her potential opponents, taking in nearly $1.1 million. Romney was next, raising nearly $954,000 for his Free and Strong America PAC in the last quarter.
Money from political action committees and 527 organizations cannot be used to finance a presidential bid, but the cash hauls are a reflection of a potential candidate's fundraising acumen and popularity among Republican activists and donors.
Gingrich spokesman Rick Tyler said last month that the former House Speaker will decide whether or not to launch a presidential exploratory committee by the end of February.