http://news.yahoo.com/s/yblog_upshot/20100915/el_yblog_upshot/tea-party-victory-endangers-gops-goal-of-retaking-the-senateWith polls showing significant GOP momentum this fall, Republicans in recent weeks began to believe they had a real chance of retaking control of the Senate in November. But a major primary upset at the hands of a tea party insurgent on Tuesday may have put the Senate GOP's dreams of a majority at serious risk.
In the biggest electoral surprise of the night, conservative activist Christine O'Donnell defeated longtime GOP Rep. Mike Castle in Delaware's Republican Senate primary. Castle, a moderate who once served as the state's governor, had been so favored to win in November that his decision to run had reportedly influenced Democrat Beau Biden, son of Vice President Joe Biden, to abandon plans to seek his father's old seat.
But with O'Donnell's come-from-nowhere win Tuesday night, top Republicans in Washington now see virtually no chance the GOP will be able to pick up the Delaware seat this fall. As a result, they admit their already slim chance of winning back Republican control of the Senate is likely dead.