| MICHIGAN REPUBLICAN PARTY | $1.2M | 105 | 2010, 2008 |
| AMERICANS FOR TAX REFORM | $995K | 4 | 2010, 2012 |
| DCCC | $944K | 79 | 2010, 2012, 2008 |
| NATIONAL ASSOCIATION OF REALTORS CONGRESSIONAL FUND | $294K | 8 | 2012 |
| NATIONAL ASSOCIATION OF REALTORS POLITICAL ACTION COMMITTEE | $277K | 24 | 2010, 2014, 2012, 2008 |
| HUMANE SOCIETY LEGISLATIVE FUND | $162K | 83 | 2010, 2012 |
| NATIONAL ASSOCIATION OF REALTORS | $43K | 7 | 2010, 2012 |
| AMERICAN ASSOCIATION FOR JUSTICE POLITICAL ACTION COMMITTEE (AAJ PAC) | $40K | 13 | 2010, 2014, 2012, 2008 |
| SEIU COPE (SERVICE EMPLOYEES INTERNATIONAL UNION COMMITTEE ON POLITICAL EDUCATION) | $38K | 10 | 2010, 2012, 2008 |
| NATIONAL ASSOCIATION OF LETTER CARRIERS | $38K | 9 | 2010, 2008 |