One of two U.S. Senate seats representing the state of Delaware. Senators serve six-year terms and represent the entire state population.


There is no data about this race yet. General election on Nov 5, 2030.
| Year | Winner | Result | Runner-Up | Total Votes |
|---|---|---|---|---|
| 2024 | Lisa Blunt Rochester D | 56.6% | 500,606 | |
| 2020 | Christopher A. Coons D | 59.4% | 490,935 | |
| 2018 | Thomas R Carper D | 60.0% | 362,592 | |
| 2014 | Christopher A. Coons D | 55.8% | 234,038 | |
| 2012 | Thomas R. Carper D | 66.4% | 399,606 | |
| 2008 | Joseph R. Biden Jr. D | 64.7% | 398,134 | |
| 2006 | Thomas R. Carper D | 70.2% | 242,972 | |
| 2002 | Joseph R. Biden Jr. D | 58.2% | 232,314 | |
| 2000 | Thomas R. Carper D | 55.5% | 326,993 | |
| 1996 | Joseph R. Biden Jr. D | 60.0% | 275,591 | |
| 1994 | Jr. William V. Roth R | 55.8% | 199,000 | |
| 1990 | Joseph R. Biden Jr. D | 62.7% | 180,152 | |
| 1988 | Jr. William V. Roth R | 62.1% | 243,493 | |
| 1984 | Joseph R. Biden Jr. D | 60.1% | 245,932 | |
| 1982 | Jr. William V. Roth R | 55.2% | 190,960 |