| AMERICAN FEDERATION OF STATE COUNTY & MUNICIPAL EMPLOYEES P E O P L E | $46K | 22 | 1990, 1996, 2024, 1994, 1992, 2020, 1988, 2022, 1986 |
| D.R.I.V.E. - DEMOCRAT, REPUBLICAN, INDEPENDENT VOTER EDUCATION (THE PAC OF THE INTERNATIONAL BROTHERHOOD OF TEAMSTERS) | $39K | 10 | 1990, 1996, 2024, 1994, 1992, 2020, 2022, 1986 |
| AMERICAN FEDERATION OF TEACHERS, AFL-CIO COMMITTEE ON POLITICAL EDUCATION | $35K | 13 | 1990, 1996, 2024, 1994, 1992, 2020, 1988, 2022, 1986 |
| AMERICAN ASSOCIATION FOR JUSTICE POLITICAL ACTION COMMITTEE (AAJ PAC) | $34K | 20 | 1990, 1996, 2024, 1994, 1992, 2020, 1988, 2022, 1986 |
| MACHINISTS NON PARTISAN POLITICAL LEAGUE OF THE INTERNATIONAL ASSOCIATION OF MACHINISTS & AEROSPACE WORKERS | $31K | 18 | 1990, 1996, 2024, 1994, 1992, 2020, 1988, 2022, 1986 |
| LABORERS' INTERNATIONAL UNION OF NORTH AMERICA (LIUNA) PAC | $30K | 20 | 1990, 1996, 2024, 1994, 1992, 2020, 1988, 2022 |
| NATIONAL ASSOCIATION OF REALTORS POLITICAL ACTION COMMITTEE | $30K | 22 | 1990, 1996, 2024, 1994, 1992, 1988, 1986 |
| UA UNION PLUMBERS & PIPEFITTERS VOTE! PAC (UNITED ASSOCIATION OF JOURNEYMEN AND APPRENTICES OF THE PLUMBING & PIPEFITTING INDUSTRY OF THE UNITED STATES AND CANADA) | $30K | 10 | 1990, 1996, 2024, 1994, 1992, 2020, 1988, 2022 |
| UAW - V - CAP (UAW VOLUNTARY COMMUNITY ACTION PROGRAM) 'INT'L UNION UNITED AUTOMOBILE AEROSPACE & AGRICULTURAL IMPLEMENT WORKERS OF AMERICA UAW | $27K | 18 | 1990, 1996, 2024, 1994, 1992, 2020, 1988, 2022, 1986 |
| AMERICAN CRYSTAL SUGAR COMPANY POLITICAL ACTION COMMITTEE | $23K | 9 | 1996, 2024, 1994, 2020, 2022 |