I struggle with them, to be honest. Convictions are easy to have if you if you don't have to implement them. Everything Benn did when he was actually a minister was a disaster. Corbyn would be even worse, as he is essentially a campaigner, born to oppose from the moral high ground. I have got a lot of sympathy for some of their ideals, and was very impressed by Benn's "Arguments for Socialism" as a youngster. But I have long since realised that the type of society that these blokes want requires 95% plus of the population not only to agree, but actively support them. In a democracy it's never going to happen, and would probably be a disaster (and a self righteous, priggish one at that) if it did. Glad they exist though, it's important to have a broad spectrum of idea around. My heroes are pragmatists, like Bevan, Attlee, Bevin, Morrison who reshaped a country in the most desperate state in such a way that its taken 70 years for bits of it to unravel.I always have the deepest respect for politicians who have conviction. I seldom agreed with Tony Benn but I found him fascinating to listen to.
I would feel more confident of this if I could think of a single person to fill this role. If Corbyn wins they will oust him within 2 years as their poll figures plummet.He won't be PM, but he might just trigger a realignment which could see a left-of-centre successor come through who could win an election.