This 8 June 2017 video says about itself:
Jeremy Corbyn says UK Prime Minister Theresa May should resign after triumphant night for Labour.
Jeremy Corbyn, whose political career reached unexpected heights as the results of the UK’s general election filtered through last night, has urged Prime Minister Theresa May to stand down after a dismal night for the Conservatives.
So, under Corbyn, so ‘unelectable’ according to the Conservatives, to the Blairite pro-Iraq war and pro-austerity Labour politicians and the media pundit class, Labour did far, far better than under Blair, under Brown who did one almost invisible baby step to the left compared to Blair, and under Miliband, who did one more baby step.
Corbyn’s bigger step to the left has worked. The Blairites should shut up.