So argues the Wall Street Journal editorial board today (sub. req'd):
In Virginia, Democrat Tim Kaine's defeat of Republican Jerry Kilgore shows what happens when the GOP loses credibility on taxes. Virginia is a state that Mr. Bush twice carried comfortably. But the GOP divided over Democratic Governor Mark Warner's record tax increase last year, and Mr. Kilgore never said he'd repeal it. He tried to straddle the difference between business lobbies who liked more money for roads and the rank-and-file who hated giving more to the government. The result was that there was little real difference between the candidates on fiscal issues -- and Republicans lose those campaigns nearly every time.