| INTERNATIONAL BROTHERHOOD OF ELECTRICAL WORKERS POLITICAL ACTION COMMITTEE | $115K | 27 | 2010, 2002, 2024, 2014, 2006, 2020, 2016, 2004, 2012, 2018, 2022, 2008 |
| MACHINISTS NON PARTISAN POLITICAL LEAGUE OF THE INTERNATIONAL ASSOCIATION OF MACHINISTS & AEROSPACE WORKERS | $115K | 24 | 2010, 2002, 2024, 2014, 2006, 2020, 2016, 2004, 2012, 2018, 2022, 2008 |
| AMERICAN FEDERATION OF STATE COUNTY & MUNICIPAL EMPLOYEES P E O P L E | $114K | 55 | 2010, 2002, 2024, 2014, 2006, 2020, 2016, 2004, 2012, 2018, 2022, 2008 |
| NATIONAL ASSOCIATION OF REALTORS POLITICAL ACTION COMMITTEE | $100K | 42 | 2010, 2002, 2024, 2014, 2006, 2020, 2016, 2004, 2012, 2018, 2022, 2008 |
| CARPENTERS LEGISLATIVE IMPROVEMENT COMMITTEE UNITED BROTHERHOOD OF CARPENTERS AND JOINERS | $100K | 30 | 2010, 2002, 2024, 2014, 2006, 2020, 2016, 2004, 2012, 2018, 2022, 2008 |
| NATIONAL BEER WHOLESALERS ASSOCIATION POLITICAL ACTION COMMITTEE | $97K | 39 | 2010, 2002, 2024, 2014, 2020, 2016, 2004, 2012, 2018, 2022, 2008 |
| INTERNATIONAL ASSOCIATION OF SHEET METAL, AIR, RAIL AND TRANSPORTATION WORKERS POLITICAL ACTION LEAGUE | $93K | 25 | 2010, 2002, 2024, 2006, 2020, 2016, 2004, 2012, 2018, 2022, 2008 |
| AMERICAN FEDERATION OF TEACHERS, AFL-CIO COMMITTEE ON POLITICAL EDUCATION | $91K | 34 | 2010, 2002, 2024, 2014, 2006, 2020, 2016, 2004, 2012, 2018, 2022, 2008 |
| AMERICAN CRYSTAL SUGAR COMPANY POLITICAL ACTION COMMITTEE | $86K | 21 | 2010, 2024, 2014, 2006, 2020, 2016, 2012, 2018, 2022, 2008 |
| UNITED PARCEL SERVICE, INC. PAC (UPSPAC) | $81K | 53 | 2010, 2002, 2024, 2014, 2006, 2020, 2016, 2004, 2012, 2018, 2022, 2008 |