There is no doubt the Prince of Darkness is a master of the PR battle and right at the moment is probably responsible for preventing Labour's poll ratings really collapsing. He though has two very big problems, outside the labour party, he is seen for exactly what he is a smarmy operator whos hand will be in yout purse/pocket in minutes for what it can get, and whilst he may be good he is not good enough to dig them out of the hole every one else in the cabinet is digging no matter how much sh1t he can shovel in to try and fill it again.
Finally, can he survive till the election without another scandal.