| Year | Age | State | Party | Office | District | Stage | Pos | Votes | % |
|---|---|---|---|---|---|---|---|---|---|
| 1996 | MD | D | U.S. House | District 08 | Primary | 4 | 2,874 | 7.5% | |
| 1998 | MD | D | Comptroller | Primary | 3 | 24,408 | 5.8% | ||
| 2000 | MD | D | U.S. House | District 08 | Primary | 5 | 3,847 | 5.9% | |
| 2002 | MD | D | Comptroller | Primary | 3 | 22,044 | 4.0% | ||
| 2004 | MD | D | U.S. House | District 08 | Primary | 3 | 1,784 | 2.4% | |
| 2006 | MD | D | U.S. Senate Class 1 | Primary | 15 | 2,039 | 0.3% | ||
| 2008 | MD | D | U.S. House | District 08 | Primary | 3 | 3,391 | 2.9% | |
| 2010 | MD | D | U.S. Senate Class 3 | Primary | 7 | 6,911 | 1.4% | ||
| 2012 | MD | D | U.S. Senate Class 1 | Primary | 7 | 3,993 | 1.2% | ||
| 2014 | MD | D | U.S. House | District 08 | Primary | 3 | 1,950 | 2.9% | |
| 2016 | MD | D | U.S. Senate Class 3 | Primary | 6 | 8,561 | 1.0% | ||
| 2018 | MD | D | U.S. Senate Class 1 | Primary | 6 | 9,874 | 1.7% | ||
| 2020 | MD | D | U.S. House | District 08 | Primary | 3 | 4,874 | 3.8% | |
|
Age: Age as of July 1 of the year pertaining to this election. |