| DSCC | $769K | 12 | 1994, 1988, 2000 |
| AFL-CIO | $74K | 28 | 1994, 1988, 2000 |
| VIRGINIA EDUCATION ASSOCIATION, INC. | $71K | 11 | 1994, 2000 |
| NATIONAL EDUCATION ASSOCIATION | $55K | 1 | 2000 |
| NATIONAL COMMITTEE TO PRESERVE SOCIAL SECURITY & MEDICARE PAC | $30K | 8 | 1988, 2000 |
| NEA FUND FOR CHILDREN AND PUBLIC EDUCATION | $30K | 9 | 1990, 1994, 1988, 2000 |
| SEAFARERS POLITICAL ACTIVITY DONATION - SEAFARERS INTERNATIONAL UNION OF NA-AGLIW | $30K | 9 | 1990, 1994, 1988, 1998, 2000 |
| FEDEX CORPORATION POLITICAL ACTION COMMITTEE | $29K | 8 | 1994, 1988, 1998, 2000 |
| INTERNATIONAL BROTHERHOOD OF ELECTRICAL WORKERS POLITICAL ACTION COMMITTEE | $28K | 7 | 1994, 1988, 2000 |
| NATIONAL ASSOCIATION OF INSURANCE AND FINANCIAL ADVISORS POLITICAL ACTION COMM | $28K | 6 | 1994, 1988, 2000 |