Here are some of the biggest financers of super PACs, the candidate-supporting organizations that can accept unlimited donations, as of May 31 according to data from the Federal Election Commission.
Harold SimmonsSimmons, a billionaire, is the top individual super PAC donor so far this cycle. He has donated $13 million to Republican super PACs. He gave $11 million to American Crossroads, $1.1 million to Winning Our Future, $800,000 to Restore Our Future, and $100,000 to Restoring Prosperity Fund. Simmons was also a major donor to Newt Gingrich during the primaries.Flor Cordero/Reuters