Campaign contributions from 2002-2008 to U.S. Congress totaled $11,948.6 million.
Top 20 interests funding the campaigns of the congress
| Interest | Contributions |
|---|---|
| Attorneys & law firms | $199,432,084 |
| Retired | $151,848,533 |
| Security brokers & investment companies | $54,827,178 |
| General commerce | $45,238,829 |
| Lobbyists & Public Relations | $42,833,896 |
| Republican leadership PAC | $36,311,266 |
| Commercial banks & bank holding companies | $34,533,362 |
| Real estate | $32,120,311 |
| Schools & colleges | $31,744,553 |
| Physicians | $31,208,741 |
| Real Estate developers & subdividers | $27,421,688 |
| Other physician specialists | $27,125,267 |
| Insurance companies, brokers & agents | $26,106,465 |
| Real estate agents | $24,165,361 |
| Investors | $22,377,972 |
| Business services | $22,148,849 |
| Pro-Israel | $21,684,648 |
| Building trades unions | $21,636,165 |
| Democratic/Liberal | $20,469,583 |
| Accountants | $19,715,013 |
