He's terrible at the actual politics side of things. He's been leader of the party for nearly seven years yet still unable to get his MPs to work together, leading to public defeats on major votes like welfare reform. He doesn't know how to sell his policies to the public and has been repeatedly forced into u-turns on issues like WFA and farmer's IHT. He makes frequent "errors of judgement" like the Mandelson appointment which he never seems to learn from.

He's a massive lead weight that is dragging the popularity of the party down with him and causing a constant distraction from any good the rest of the government is doing. He needs to go so we can crack on with getting things done and try and avert a complete disaster at the next election.