In somewhat unhappy news for prospects of a Senate takeover in November, GOP moderate Lincoln Chafee withstands a primary challenge from his right, in the form of Cranston mayor Steve Laffey, 54-46%. Still, Democrat (and son of Chafee’s father’s roommate at Yale) Sheldon Whitehouse is effectively tied with Chafee in recent polls, so the damage from a bruising primary race may still pay dividends for the Dems.