Can you try to explain how this came about?
Who voted for him? Was it within the liberal Labor parliament members who selected him? If so, with the landslide win, didn’t they see this as future suicide or are they trying to send a message to someone in the leadership of the Labor party?
In the past they had an electoral college sort of deal, giving extra weight to MPs and major unions.
But now they’ve changed it, all party members, “registered supporters” and “affiliated supporters” (union members) get 1 vote. Instant runoff ballot. There were 4 candidates. About 420K people voted. Corbyn won 59% against the other 3.
The breakdown by the 3 different categories of voters was interesting. “Party Members” gave him just under 50. “Registered Supporters” over 80%!. And “Affiliated Supporters” gave him 58%.
35 MPs are needed to nominate candidates, this guy got only 36, seems to me he’d have had no chance if MPs made the selection alone. This creates a weird situation with the MPs having a leader they don’t want. He was the choice of average Labour voters, who clearly want communism.
Here’s more info
https://en.wikipedia.org/wiki/Labour_Party_(UK)_leadership_election,_2015