| NRCC | $256K | 171 | 1990, 2002, 1992, 1984, 1988, 1980, 1986, 1982 |
| NATIONAL ASSOCIATION OF REALTORS POLITICAL ACTION COMMITTEE | $105K | 22 | 1990, 1994, 1992, 1984, 1988, 1980, 1986, 1982 |
| REPUBLICAN NATIONAL COMMITTEE | $99K | 10 | 1990, 2002, 1984, 1988, 1980, 1982 |
| SEAFARERS POLITICAL ACTIVITY DONATION - SEAFARERS INTERNATIONAL UNION OF NA-AGLIW | $60K | 23 | 1990, 2002, 1994, 1992, 1988, 1986 |
| CONSTELLATION ENERGY GROUP INC. FEDERAL PAC | $51K | 28 | 1990, 2002, 1994, 1992, 1984, 1988, 1980, 1986, 1982 |
| AMERICAN MEDICAL ASSOCIATION POLITICAL ACTION COMMITTEE | $44K | 23 | 1990, 2002, 1994, 1992, 1984, 1988, 1980, 1986, 1982 |
| AMERICAN MARITIME OFFICERS VOLUNTARY POLITICAL ACTION FUND | $38K | 17 | 1990, 2002, 1994, 1992, 1984, 1988, 1986 |
| AAI CORPORATION POLITICAL ACTION COMMITTEE | $37K | 30 | 1990, 2002, 1994, 1992, 1988, 1986 |
| D.R.I.V.E. - DEMOCRAT, REPUBLICAN, INDEPENDENT VOTER EDUCATION (THE PAC OF THE INTERNATIONAL BROTHERHOOD OF TEAMSTERS) | $33K | 20 | 1990, 2002, 1992, 1984, 1988, 1986 |
| MARYLAND COALITION TO STOP ETHNIC CLEANSING (MCSEC) | $27K | 18 | 1992 |