| AFL-CIO | $27K | 2 | 2012 |
| INT'L ASSOCIATION OF BRIDGE, STRUCTURAL, ORNAMENTAL AND REINFORCING IRON WORKERS (IPAL) | $20K | 4 | 2014, 2012 |
| UA UNION PLUMBERS & PIPEFITTERS VOTE! PAC (UNITED ASSOCIATION OF JOURNEYMEN AND APPRENTICES OF THE PLUMBING & PIPEFITTING INDUSTRY OF THE UNITED STATES AND CANADA) | $20K | 5 | 2014, 2012 |
| MACHINISTS NON PARTISAN POLITICAL LEAGUE OF THE INTERNATIONAL ASSOCIATION OF MACHINISTS & AEROSPACE WORKERS | $20K | 4 | 2014, 2012 |
| LABORERS' INTERNATIONAL UNION OF NORTH AMERICA (LIUNA) PAC | $18K | 5 | 2014, 2012 |
| INTERNATIONAL BROTHERHOOD OF ELECTRICAL WORKERS POLITICAL ACTION COMMITTEE | $15K | 3 | 2014, 2012 |
| UNITED STEELWORKERS POLITICAL ACTION FUND | $15K | 4 | 2014, 2012 |
| HUMAN RIGHTS CAMPAIGN PAC | $15K | 3 | 2014, 2012 |
| AMERIPAC: THE FUND FOR A GREATER AMERICA | $15K | 3 | 2014, 2012 |
| AMERICAN ASSOCIATION FOR JUSTICE POLITICAL ACTION COMMITTEE (AAJ PAC) | $13K | 3 | 2014, 2012 |