| INTERNATIONAL BROTHERHOOD OF ELECTRICAL WORKERS POLITICAL ACTION COMMITTEE | $34K | 10 | 2010, 2006, 2018, 2008 |
| INTERNATIONAL ASSOCIATION OF SHEET METAL, AIR, RAIL AND TRANSPORTATION WORKERS POLITICAL ACTION LEAGUE | $32K | 9 | 2010, 2006, 2018, 2008 |
| CARPENTERS LEGISLATIVE IMPROVEMENT COMMITTEE UNITED BROTHERHOOD OF CARPENTERS AND JOINERS | $30K | 6 | 2010, 2006, 2008 |
| AMERICAN FEDERATION OF TEACHERS, AFL-CIO COMMITTEE ON POLITICAL EDUCATION | $30K | 13 | 2010, 2006, 2008 |
| MACHINISTS NON PARTISAN POLITICAL LEAGUE OF THE INTERNATIONAL ASSOCIATION OF MACHINISTS & AEROSPACE WORKERS | $30K | 6 | 2010, 2006, 2008 |
| INTERNATIONAL UNION OF PAINTERS AND ALLIED TRADES POLITICAL ACTION TOGETHER POLITICAL COMMITTEE | $30K | 8 | 2010, 2006, 2008 |
| AMERICAN ASSOCIATION FOR JUSTICE POLITICAL ACTION COMMITTEE (AAJ PAC) | $30K | 12 | 2010, 2006, 2008 |
| NEA FUND FOR CHILDREN AND PUBLIC EDUCATION | $30K | 9 | 2010, 2006, 2008 |
| AMERICAN FEDERATION OF STATE COUNTY & MUNICIPAL EMPLOYEES P E O P L E | $29K | 11 | 2010, 2006, 2008 |
| NATIONAL AIR TRAFFIC CONTROLLERS ASSOCIATION PAC | $25K | 19 | 2010, 2006, 2008 |