| Election Name: | 2002 United States Senate election in Delaware |
| Country: | Delaware |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1996 United States Senate election in Delaware |
| Previous Year: | 1996 |
| Next Election: | 2008 United States Senate election in Delaware |
| Next Year: | 2008 |
| Election Date: | November 5, 2002 |
| Image1: | File:Joe Biden - World Economic Forum Annual Meeting Davos 2003 (cropped).jpg |
| Nominee1: | Joe Biden |
| Party1: | Democratic Party (United States) |
| Popular Vote1: | 135,253 |
| Percentage1: | 58.22% |
| Party2: | Republican Party (United States) |
| Popular Vote2: | 94,793 |
| Percentage2: | 40.80% |
| Map Size: | 210px |
| U.S. Senator | |
| Before Election: | Joe Biden |
| Before Party: | Democratic Party (United States) |
| After Election: | Joe Biden |
| After Party: | Democratic Party (United States) |
The 2002 United States Senate election in Delaware was held on November 5, 2002. Incumbent Democratic U.S. Senator Joe Biden won re-election to a sixth term, defeating Raymond Clatworthy in a rematch. This is the last Senate election that Biden decreased his percentage of the votes since the previous election and the only time Biden lost Kent County in his seven elections to the Senate.
With this election, Biden became the first senator in Delaware to win six terms and became the state's longest-serving senator.
| County[5] | Joseph Robinette Biden Jr.Democratic | Raymond J. ClatworthyRepublican | Maurice BarrosDelaware Independent | Raymond T. BuranelloLibertarian | Robert E. MattsonNatural Law | Total votes cast | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| % | % | % | % | % | |||||||||||||||||
| Kent | 16,786 | 48.82% | 17,310 | 50.35% | 158 | 0.46% | 99 | 0.29% | 27 | 0.08% | 34,380 | ||||||||||
| New Castle | 91,554 | 63.02% | 52,129 | 35.88% | 711 | 0.49% | 621 | 0.43% | 265 | 0.18% | 145,280 | ||||||||||
| Sussex | 26,830 | 51.11% | 25,277 | 48.15% | 215 | 0.41% | 112 | 0.21% | 58 | 0.11% | 52,492 | ||||||||||
| Total | 135,253 | 58.22% | 94,793 | 40.80% | 996 | 0.43% | 922 | 0.40% | 350 | 0.15% | 232,152 | ||||||||||