| MACHINISTS NON PARTISAN POLITICAL LEAGUE OF THE INTERNATIONAL ASSOCIATION OF MACHINISTS & AEROSPACE WORKERS | $50K | 10 | 2008, 2010, 2012, 2014, 2022 |
| AMERICAN ASSOCIATION FOR JUSTICE POLITICAL ACTION COMMITTEE (AAJ PAC) | $45K | 17 | 2008, 2010, 2012, 2014, 2022 |
| UNITED FOOD AND COMMERCIAL WORKERS INTERNATIONAL UNION ACTIVE BALLOT CLUB | $44K | 18 | 2008, 2010, 2012, 2014 |
| INTERNATIONAL BROTHERHOOD OF ELECTRICAL WORKERS POLITICAL ACTION COMMITTEE | $40K | 12 | 2008, 2010, 2012, 2014, 2016 |
| AMERICAN FEDERATION OF TEACHERS, AFL-CIO COMMITTEE ON POLITICAL EDUCATION | $36K | 11 | 2008, 2010, 2012, 2014 |
| DEMOCRACY FOR AMERICA | $35K | 10 | 2006, 2008, 2010, 2012, 2014 |
| COMMUNICATIONS WORKERS OF AMERICA - COPE POLITICAL CONTRIBUTIONS COMMITTEE | $31K | 22 | 2008, 2010, 2012, 2014, 2016 |
| D.R.I.V.E. - DEM, REP, IND VOTER ED (THE PAC OF THE INT'L BRHD OF TEAMSTERS) | $31K | 11 | 2008, 2010, 2012, 2014, 2022 |
| ENGINEERS POLITICAL EDUCATION COMMITTEE (EPEC)/INTERNATIONAL UNION OF OPERATING ENGINEERS | $30K | 8 | 2008, 2010, 2012, 2014 |
| SEIU COPE (SERVICE EMPLOYEES INTERNATIONAL UNION COMMITTEE ON POLITICAL EDUCATION) | $30K | 8 | 2008, 2010, 2012 |