1. Fred Eychaner, NewsWeb Corp. - $4.25 million
2. James H. Simons, Renaissance Technologies LLC - $1.5 million
3. Laborers International Union of North America - $1.3 million
4. Donald Sussman, Paloma Partners LLC - $1.15 million
T5. Amber Mostyn, Mostyn Law Firm - $1 million
T5. International Brotherhood of Electrical Workers - $1 million
*Top donors for 2012 election cycle; numbers through Nov. 26, 2012.
Source: Center for Responsive Politics, Federal Election Commission