| COMMUNICATIONS WORKERS OF AMERICA - COPE POLITICAL CONTRIBUTIONS COMMITTEE | $63K | 19 | 2010, 2014, 2006, 2016, 2012, 2018, 2008 |
| MACHINISTS NON PARTISAN POLITICAL LEAGUE OF THE INTERNATIONAL ASSOCIATION OF MACHINISTS & AEROSPACE WORKERS | $60K | 14 | 2010, 2014, 2006, 2016, 2012, 2018, 2008 |
| AMERICAN FEDERATION OF TEACHERS, AFL-CIO COMMITTEE ON POLITICAL EDUCATION | $55K | 19 | 2010, 2014, 2006, 2016, 2012, 2018, 2008 |
| AMERICAN POSTAL WORKERS UNION COMMITTEE ON POLITICAL ACTION | $55K | 23 | 2010, 2014, 2006, 2016, 2012, 2018, 2008 |
| SEIU COPE (SERVICE EMPLOYEES INTERNATIONAL UNION COMMITTEE ON POLITICAL EDUCATION) | $53K | 14 | 2010, 2014, 2006, 2020, 2016, 2012, 2018, 2008 |
| MINNESOTA DEMOCRATIC-FARMER-LABOR PARTY | $52K | 6 | 2014, 2006 |
| AMERICAN CRYSTAL SUGAR COMPANY POLITICAL ACTION COMMITTEE | $50K | 12 | 2010, 2014, 2016, 2012, 2018, 2008 |
| AMERICAN ASSOCIATION FOR JUSTICE POLITICAL ACTION COMMITTEE (AAJ PAC) | $50K | 37 | 2010, 2014, 2006, 2016, 2012, 2018, 2008 |
| INTERNATIONAL BROTHERHOOD OF ELECTRICAL WORKERS POLITICAL ACTION COMMITTEE | $48K | 21 | 2010, 2014, 2006, 2016, 2012, 2008 |
| AMERICAN FEDERATION OF STATE COUNTY & MUNICIPAL EMPLOYEES P E O P L E | $47K | 28 | 2010, 2014, 2006, 2016, 2012, 2018, 2008 |