| NRCC | $2.8M | 42 | 2006, 2008 |
| DCCC | $253K | 78 | 2010, 2002, 2006, 2012, 2022, 2008 |
| CONNECTICUT DEMOCRATIC STATE CENTRAL COMMITTEE | $134K | 16 | 2010, 2002, 2024, 2006, 2020 |
| AMERICAN FEDERATION OF TEACHERS, AFL-CIO COMMITTEE ON POLITICAL EDUCATION | $105K | 25 | 2010, 2002, 2024, 2014, 2006, 2020, 2016, 2012, 2018, 2022, 2008 |
| INTERNATIONAL BROTHERHOOD OF ELECTRICAL WORKERS POLITICAL ACTION COMMITTEE | $105K | 32 | 2010, 2002, 2014, 2006, 2020, 2016, 2012, 2018, 2022, 2008 |
| AMERICAN ASSOCIATION FOR JUSTICE POLITICAL ACTION COMMITTEE (AAJ PAC) | $105K | 49 | 2010, 2002, 2024, 2014, 2006, 2020, 2016, 2012, 2018, 2022, 2008 |
| NATIONAL ASSOCIATION OF REALTORS POLITICAL ACTION COMMITTEE | $102K | 49 | 2010, 2024, 2014, 2020, 2016, 2012, 2018, 2022, 2008 |
| MACHINISTS NON PARTISAN POLITICAL LEAGUE OF THE INTERNATIONAL ASSOCIATION OF MACHINISTS & AEROSPACE WORKERS | $100K | 22 | 2010, 2002, 2024, 2014, 2020, 2016, 2012, 2018, 2022, 2008 |
| NEA FUND FOR CHILDREN AND PUBLIC EDUCATION | $94K | 37 | 2010, 2002, 2024, 2014, 2006, 2020, 2016, 2012, 2018, 2022, 2008 |
| AMERICAN FEDERATION OF STATE COUNTY & MUNICIPAL EMPLOYEES P E O P L E | $94K | 36 | 2010, 2002, 2024, 2014, 2006, 2020, 2016, 2012, 2022, 2008 |