1. William Dore, Dore Energy - $2.25 million

2. Foster Friess, investor - $2.1 million

3. Annette Simmons, Contran Corp. - $1.2 million

4. Susan W. Gore, retired - $500,000

5. John M. Templeton, Jr., John Templeton Foundation - $265,000

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

Source: Center for Responsive Politics, Federal Election Commission