Priorities USA Action: Top donors*

1. James H. Simons, Renaissance Technologies LLC - $5 million

2. Fred Eychaner, Newsweb Corp. - $4.5 million

3. Steve Mostyn, Mostyn Law Firm - $3 million

4. Jeffrey Katzenberg, Dreamworks Animation SKG Inc. - $3 million

5. United Association of Journeymen and Apprentices of the Plumbing, Pipefitting and Sprinkler Fitting Industry - $2.4 million

*Top donors for 2012 election cycle; numbers through Nov. 26, 2012.

Source: Center for Responsive Politics, Federal Election Commission