The real canary in the coal mine is the personal ratings of both Starmer & Johnson; Starmer is seen as more competent than Johnson & I can't remember what the specific one personal rating where Starmer was the first Labour Leader for 13 years to be ahead.
I've generally always thought that the personal ratings of the leaders are an equal if not better metric of an election; of course this has just convinced me that they'll ditch Bojo either this year or the next & bring in Rishi (someone who was this time last year a parliamentary under-secretary of state for local government)
Do you really think they'll ditch Boris?