| MACHINISTS NON PARTISAN POLITICAL LEAGUE OF THE INTERNATIONAL ASSOCIATION OF MACHINISTS & AEROSPACE WORKERS | $55K | 11 | 2024, 2014, 2020, 2016, 2018, 2022 |
| AMERICAN FEDERATION OF STATE COUNTY & MUNICIPAL EMPLOYEES P E O P L E | $53K | 29 | 2024, 2014, 2020, 2016, 2018, 2022 |
| INTERNATIONAL BROTHERHOOD OF ELECTRICAL WORKERS POLITICAL ACTION COMMITTEE | $50K | 19 | 2024, 2014, 2020, 2016, 2018, 2022 |
| AMERICAN CRYSTAL SUGAR COMPANY POLITICAL ACTION COMMITTEE | $50K | 13 | 2024, 2014, 2020, 2016, 2018, 2022 |
| PLUMBERS & PIPEFITTERS LOCAL NO 9 POLITICAL ACTION COMMITTEE | $50K | 14 | 2024, 2020, 2016, 2018, 2022 |
| AMERICAN FEDERATION OF TEACHERS, AFL-CIO COMMITTEE ON POLITICAL EDUCATION | $46K | 13 | 2024, 2014, 2020, 2016, 2018, 2022 |
| CARPENTERS LEGISLATIVE IMPROVEMENT COMMITTEE UNITED BROTHERHOOD OF CARPENTERS AND JOINERS | $45K | 11 | 2024, 2014, 2020, 2016, 2018, 2022 |
| LABORERS' INTERNATIONAL UNION OF NORTH AMERICA (LIUNA) PAC | $45K | 16 | 2024, 2014, 2020, 2016, 2018, 2022 |
| NEA FUND FOR CHILDREN AND PUBLIC EDUCATION | $45K | 17 | 2024, 2014, 2020, 2016, 2018, 2022 |
| INTERNATIONAL ASSOCIATION OF SHEET METAL, AIR, RAIL AND TRANSPORTATION WORKERS POLITICAL ACTION LEAGUE | $44K | 15 | 2024, 2014, 2020, 2016, 2018, 2022 |