Who’s TLT?
Anyway, I’m pretty sure that had John McDonnell been labour leader rather then Corbyn he would have done slightly better despite being if anything more left wing.
And Corbyn himself ate into Theresa May’s slender majority despite being much more left wing than his predecessor.
And as I always, say never underestimate the capacity for a ruling party to mess things up. So far we have seen incompetence, corruption and cronyism on a grand scale from Johnson and co. And we’re still on year one.