Answer
In 2000, Tom Carper defeated William Roth to take the Senate seat. This was a major upset, as Roth had been in office for over 20 years and was considered a strong incumbent. Carper, a Democrat, campaigned on a platform of fiscal responsibility and job creation. He also criticized Roth for his support of the Iraq War. Carper won the election by a narrow margin, 50.2% to 49.8%.