| MACHINISTS NON PARTISAN POLITICAL LEAGUE OF THE INTERNATIONAL ASSOCIATION OF MACHINISTS & AEROSPACE WORKERS | $90K | 18 | 2010, 2024, 2014, 2020, 2016, 2012, 2018, 2022, 2008 |
| AMERICAN FEDERATION OF STATE COUNTY & MUNICIPAL EMPLOYEES P E O P L E | $87K | 42 | 2010, 2024, 2014, 2020, 2016, 2012, 2018, 2022, 2008 |
| D.R.I.V.E. - DEMOCRAT, REPUBLICAN, INDEPENDENT VOTER EDUCATION (THE PAC OF THE INTERNATIONAL BROTHERHOOD OF TEAMSTERS) | $82K | 26 | 2010, 2024, 2014, 2020, 2016, 2012, 2018, 2022, 2008 |
| AMERICAN FEDERATION OF TEACHERS, AFL-CIO COMMITTEE ON POLITICAL EDUCATION | $81K | 28 | 2010, 2024, 2014, 2020, 2016, 2012, 2018, 2022, 2008 |
| AMERICAN ASSOCIATION FOR JUSTICE POLITICAL ACTION COMMITTEE (AAJ PAC) | $77K | 51 | 2010, 2024, 2014, 2020, 2016, 2012, 2018, 2022, 2008 |
| INTERNATIONAL BROTHERHOOD OF ELECTRICAL WORKERS POLITICAL ACTION COMMITTEE | $73K | 30 | 2010, 2024, 2014, 2020, 2016, 2012, 2018, 2022, 2008 |
| GENERAL ELECTRIC COMPANY AEROSPACE EMPLOYEE POLITICAL ACTION COMMITTEE (GE AEROSPACE PAC) | $73K | 46 | 2010, 2024, 2014, 2020, 2016, 2012, 2018, 2022, 2008 |
| CARPENTERS LEGISLATIVE IMPROVEMENT COMMITTEE UNITED BROTHERHOOD OF CARPENTERS AND JOINERS | $70K | 19 | 2024, 2014, 2020, 2016, 2012, 2018, 2022 |
| NATIONAL ASSOCIATION OF REALTORS POLITICAL ACTION COMMITTEE | $66K | 37 | 2010, 2024, 2014, 2020, 2016, 2012, 2018, 2022, 2008 |
| AT&T INC. EMPLOYEE FEDERAL POLITICAL ACTION COMMITTEE (AT&T EMPLOYEE FEDERAL PAC) | $65K | 34 | 2010, 2024, 2014, 2020, 2016, 2012, 2018, 2022, 2008 |