That our nominee is, shall we say, less than a fully devout Republican is something already well known to the base. A new tale of party betrayal will hurt him but a tale of Bush betrayal, specifically? Dubya’s approval rating is 28%; according to the new Gallup, he’s a bigger liability for McCain than Wright is for Obama (although, surprisingly, only slightly). Conservatives who don’t want to believe the story can simply discard it based on the source and independents who do want to believe it can accept it as proof that McCain’s not the Bush clone the left wants him to be. Thanks, Arianna!