No-one in Labour is ever going to admit it, but the onslaught on Corbyn from within the party during that two years, executed in the knowledge that the Tories would never contemplate a full term with a shabby minority shored up only by a bunch of illiberal antediluvian types in Northern Ireland, amounted to a deliberate suicide note for the next election. Even had Corbyn resigned before the election, the scramble for a new leader (go on - tell me who!) would still have guaranteed defeat. In the unlikely event of a Corbyn victory in 2019, the right in the party would not have been able to stomach him as PM. The party right wanted him to lose so that they could then do what they're doing now, trying to abolish the left of the party completely and ruthlessly. The last time we had a leftie PM was Atlee, when the circumstances were extraordinary. Labour's core at the top has always been to the right of its centre. It's their party and they're ruthless bastards...

But it won't work for long. That's history for you.