Democrat Chris Coons easily won Delaware's Senate race over Republican Christine O'Donnell, a tea-party backed candidate who struggled to shake old television footage in which she spoke out against masturbation and talked about dabbling in witchcraft.
An Associated Press analysis of exit polling data showed Coons easily winning the race.
O'Donnell's upset win in the GOP primary over moderate congressman Mike Castle likely cost Republicans the contest. Castle, a popular former governor, had been heavily favored to win Vice President Joe Biden's old seat.
Coons is a wealthy attorney and the stepson of the founder of the company that developed Gore-Tex fabrics. He is the executive of the state's largest county and mostly supports the Obama administration's agenda.