There is a move by the right of the labour party to use this defeat to jettison all of the progressive policies brought in under Corbyn. Even ones which have broad support amongst the public as they are so scared of the influence of the tabloid press they are going to effectively let Murdoch write their next manifesto.
This must be resisted. Yes labour must be better at operating in this environment, but they have some really good policies under Corbyn that I would hate to see them lose