It was the largest donor to conservative causes in the 2012 election, and few people knew it existed. A secretive conservative group raised millions of dollars for right-wing causes and served as the outlet for the Koch brothers' ideas in the 2012 election. The group, called Freedom Partners, has about 200 members who pay $100,000 each in annual dues. It made $236 million in grants in 2012, outspending even Karl Rove’s massive American Crossroads. Freedom Partners president Marc Short gave the group’s upcoming IRS filing to Politico but refused to say who its donors are.