The Koch brothers and their allies are pumping tens of millions of dollars into a data company that s developing detailed, state-of-the-art profiles of 250 million Americans, giving the brothers political operation all the earmarks of a national party.

The Koch brothers main political arm intends to spend more than $125 million this year on an aggressive ground, air and data operation benefiting conservatives, according to a memo distributed to major donors and sources familiar with the group. The projected budget for Americans for Prosperity would be unprecedented for a private political group in a midterm, and would likely rival even the spending of the Republican and Democratic parties congressional campaign arms.

An Arlington, Va.-based conservative group, whose existence until now was unknown to almost everyone in politics, raised and spent $250 million in 2012 to shape political and policy debate nationwide. The group, Freedom Partners, and its president, Marc Short, serve as an outlet for the ideas and funds of the mysterious Koch brothers, cutting checks as large as $63 million to groups promoting conservative causes, according to an IRS document to be filed shortly.

Billionaire David Koch's public proclamation that he's uncommitted in the 2012 Republican field runs counter to what top Mitt Romney supporters had stated as fact for the past year - that the wealthy libertarian industrialist was firmly in Romney's camp.

In an expansion of their political footprint, the billionaire Koch brothers plan to contribute and steer a total of $88 million to conservative causes during the 2012 election cycle, according to sources, funding a new voter micro-targeting initiative, grass-roots organizing efforts and television advertising campaigns.