| DCCC | $78K | 17 | 2010, 2012, 2018 |
| AMERICAN FEDERATION OF STATE COUNTY & MUNICIPAL EMPLOYEES P E O P L E | $50K | 21 | 2010, 2012, 2014, 2016, 2018, 2020 |
| MACHINISTS NON PARTISAN POLITICAL LEAGUE OF THE INTERNATIONAL ASSOCIATION OF MACHINISTS & AEROSPACE WORKERS | $50K | 12 | 2010, 2012, 2014, 2016, 2018 |
| INTERNATIONAL UNION OF PAINTERS AND ALLIED TRADES POLITICAL ACTION TOGETHER POLITICAL COMMITTEE | $50K | 12 | 2010, 2012, 2014, 2016, 2018, 2020 |
| UA UNION PLUMBERS & PIPEFITTERS VOTE! PAC (UNITED ASSOCIATION OF JOURNEYMEN AND APPRENTICES OF THE PLUMBING & PIPEFITTING INDUSTRY OF THE UNITED STATES AND CANADA) | $50K | 11 | 2010, 2012, 2014, 2016, 2018 |
| AMERICAN ASSOCIATION FOR JUSTICE POLITICAL ACTION COMMITTEE (AAJ PAC) | $50K | 24 | 2010, 2012, 2014, 2016, 2018, 2020 |
| INTERNATIONAL BROTHERHOOD OF ELECTRICAL WORKERS POLITICAL ACTION COMMITTEE | $49K | 19 | 2010, 2012, 2014, 2016, 2018, 2020 |
| THE BOEING COMPANY PAC | $44K | 30 | 2010, 2012, 2014, 2016, 2018, 2020 |
| NEW DEMOCRAT COALITION ACTION FUND | $43K | 13 | 2010, 2012, 2014, 2016, 2018, 2020 |
| SEIU COPE (SERVICE EMPLOYEES INTERNATIONAL UNION COMMITTEE ON POLITICAL EDUCATION) | $43K | 10 | 2010, 2012, 2014, 2016, 2018 |