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.

General Election

Candidates

Predictions

Results

County results

Counties that flipped from Democratic to Republican