I fear his campaign is adrift, having lost the fire of his insurgency against the Bush years. But I agree with Rich Lowry that this ad is an effective and clear appeal to the middle class. He needs to emphasize more that his tax hikes will only hurt those at the upper end of the income scale and that his tax cuts are for the middle class. This is a Clintonian pitch (Bill, that is). It isn't enough, but it can't hurt: