Problem is Hartlepool is a red herring - it was only Labour because of the split between Tory and Brexit party last time. Plus people being out from lockdown, vaccination success, and some economic upswing. It was always going to be a shitshow because a lot of the public will see that and have a memory 0.1 seconds long. There are some things that could have gone better, but this isn’t Corbyn or Starmer. It’s Johnson’s infuriating run of luck/appeal to the most base of people.
Long time until the next GE.