Really?
What would be your take on the principled man's humongous u-turns on god knows how many issues like shoot to kill or pressing the nuclear button?
He's an opportunistic, principle-less chancer and the public have recognised it:
W"asked whose interests Jeremy Corbyn puts first during Brexit negotiations, just under one in five (18%) think that he puts the country’s interests first. Just over one in four (27%) think that he puts the Labour party first, wnearly half (47%) think he has been prioritising his own interests." - Ipsos/Mori.
Even if untrue (it is true), he's screwed. People don't like him and don't believe him anymore.