Corbyn is having a celebratory rally in Manchester right now and the his victorious candidate hasn't even bothered to show up. That just sums up the Labour party right now.
Burnham is the antithesis of Corbyn. He won't want to be tarnished by a toxic Corbyn.
I was merely pointing out the hilarity of you referring to Manchester, Liverpool, Doncaster & North Tyneside as marginals. I'm going to be honest, I thought you were being sarcastic. Now I'm a little worried that you weren't... 