| AMERICAN MEDICAL ASSOCIATION POLITICAL ACTION COMMITTEE | $375K | 36 | 1990, 2002, 1996, 1994, 1992, 1988, 1998, 1986, 2000 |
| NRCC | $114K | 40 | 1990, 2002, 1994, 1988, 1998, 1986, 1982 |
| REPUBLICAN NATIONAL COMMITTEE | $80K | 6 | 2002, 1994, 1986 |
| NATIONAL ACTIVE AND RETIRED FEDERAL EMPLOYEES ASSOCIATION POLITICAL ACTION COM (NARFE-PAC) | $77K | 23 | 1990, 2002, 1996, 1994, 1992, 1988, 1998, 1986, 2000 |
| NATIONAL ASSOCIATION OF REALTORS POLITICAL ACTION COMMITTEE | $67K | 36 | 1990, 2002, 1996, 1994, 1992, 1988, 1998, 1980, 1986, 2000 |
| NATIONAL ASSOCIATION OF LETTER CARRIERS OF U.S.A. POLITICAL FUND (LETTER CARRIER POLITICAL FUND) | $57K | 24 | 1990, 2002, 1996, 1994, 1992, 1988, 1998, 2000 |
| HUMAN RIGHTS CAMPAIGN PAC | $51K | 46 | 1990, 2002, 1996, 1994, 1992, 1998, 2000 |
| CONSTELLATION ENERGY GROUP INC. FEDERAL PAC | $45K | 31 | 1990, 2002, 1996, 1994, 1992, 1988, 1998, 1986, 2000 |
| WOMEN'S CAMPAIGN FUND | $43K | 29 | 1990, 2002, 1996, 1994, 1992, 1988, 1998, 1980, 1986, 2000 |
| GREATER WASHINGTON BOARD OF TRADE FEDERAL PAC | $41K | 21 | 1990, 2002, 1996, 1994, 1992, 1988, 1998, 1986, 2000 |