Yeah, I suppose it's not inconceivable that Labour could win Clacton, with the right wing headbanger vote split, but I imagine someone* at Labour HQ has done their homework, and decided it's long odds against (*maybe the same bloke who punted himself to lose in Suffolk?)
If I lived in Islington North instead of the newly created constituency of Hornsey and Friern Barnet, I'd be a bit conflicted about JC. Would still vote Labour, but I think Jezza should have been the Labour candidate. On the other hand, there's two reasons Labour got thumped at the last election, and he's one of them. The other one is Brexit, which goes to show that the electorate are mostly comprised of ****ing idiots, so what do you do?