| DCCC | $174K | 42 | 2008, 2010, 2012 |
| INTERNATIONAL BROTHERHOOD OF ELECTRICAL WORKERS POLITICAL ACTION COMMITTEE | $55K | 14 | 2008, 2010, 2012, 2014, 2016 |
| LABORERS' INTERNATIONAL UNION OF NORTH AMERICA (LIUNA) PAC | $53K | 13 | 2008, 2010, 2012, 2014, 2016, 2018 |
| UNITED FOOD AND COMMERCIAL WORKERS INTERNATIONAL UNION ACTIVE BALLOT CLUB | $50K | 16 | 2008, 2010, 2012, 2014, 2016 |
| EMPLOYEES OF RTX CORPORATION POLITICAL ACTION COMMITTEE | $50K | 37 | 2008, 2010, 2012, 2014, 2016, 2018 |
| AMERICAN ASSOCIATION FOR JUSTICE POLITICAL ACTION COMMITTEE (AAJ PAC) | $48K | 28 | 2008, 2010, 2012, 2014, 2016, 2018 |
| MACHINISTS NON PARTISAN POLITICAL LEAGUE OF THE INTERNATIONAL ASSOCIATION OF MACHINISTS & AEROSPACE WORKERS | $45K | 11 | 2008, 2010, 2012, 2014, 2016, 2018 |
| D.R.I.V.E. - DEM, REP, IND VOTER ED (THE PAC OF THE INT'L BRHD OF TEAMSTERS) | $43K | 12 | 2008, 2010, 2012, 2014, 2016, 2018 |
| AMERICAN FEDERATION OF STATE COUNTY & MUNICIPAL EMPLOYEES P E O P L E | $39K | 24 | 2008, 2010, 2012, 2014, 2016, 2018 |
| HONEYWELL INTERNATIONAL INC. TECHNOLOGIES PUBLIC AFFAIRS COUNCIL (HONPAC) | $39K | 19 | 2008, 2010, 2012, 2014, 2016, 2018 |