| US CHAMBER OF COMMERCE | $220K | 1 | 2012 |
| DCCC | $153K | 35 | 1994, 2014, 1992, 2016, 2012 |
| EQUALITY PROJECT PAC | $151K | 6 | 2024, 2022 |
| UNITED FOOD AND COMMERCIAL WORKERS INTERNATIONAL UNION ACTIVE BALLOT CLUB | $83K | 20 | 2024, 1994, 2014, 1992, 2020, 2016, 2012, 2018, 2022 |
| MACHINISTS NON PARTISAN POLITICAL LEAGUE OF THE INTERNATIONAL ASSOCIATION OF MACHINISTS & AEROSPACE WORKERS | $78K | 20 | 2024, 1994, 2014, 1992, 2020, 2016, 2012, 2018, 2022 |
| INTERNATIONAL BROTHERHOOD OF ELECTRICAL WORKERS POLITICAL ACTION COMMITTEE | $76K | 22 | 1996, 2024, 1994, 2014, 1992, 2020, 2016, 2012, 2018, 2022 |
| AMERICAN ASSOCIATION FOR JUSTICE POLITICAL ACTION COMMITTEE (AAJ PAC) | $73K | 28 | 2024, 1994, 2014, 1992, 2020, 2016, 2012, 2018, 2022 |
| NEA FUND FOR CHILDREN AND PUBLIC EDUCATION | $67K | 26 | 2024, 1994, 2014, 2020, 2016, 2012, 2018, 2022 |
| AMERICAN FEDERATION OF STATE COUNTY & MUNICIPAL EMPLOYEES P E O P L E | $64K | 29 | 2024, 1994, 2014, 1992, 2020, 2016, 2012, 2022 |
| AMERICAN FEDERATION OF TEACHERS, AFL-CIO COMMITTEE ON POLITICAL EDUCATION | $63K | 15 | 1994, 2014, 2020, 2016, 2012, 2018, 2022 |