The Other Klein thinks that Clinton may have ended her campaign in Pennsylvania by going so forcefully negative. Maybe so. Or maybe not. I've stopped trying to predict these things. But the Clinton campaign made a huge tactical error in jumping on the "bitter" comments themselves, rather than simply letting the media push them. If Obama had just been answering to the media, it would have been a problem. But when Clinton jumped in, he started being able to answer more attacks from Hillary Clinton, leading to videos like this one, and letting the media stop reporting on the bitter comments and start reporting on a new spat between Clinton and Obama. That's the sort of thing voters instinctively tune out. Worse, it created second-day news stories where Obama could counterattack on Clinton. If anything in this whole spat will be meaningful to the superdelegates, my hunch is that it'll be Clinton's apparent inability to play a stunningly good political hand.
