I hope there isn't a revolution! I don't see how that would be a good thing for most people, since revolutions cause turmoil.
I suspect its because left wingers tend to be more on social media and more prone to making outlandish statements that attract publicity and don't see anything wrong with forcing their views upon people, because they think they're always right. I also think they tend more towards being employed in the media and the arts, so that gives their views more publicity that the figures actually supporting them would indicate.
I would estimate that Corbyn is more likely to return the Conservatives to power because his influence will split the remaining non-Conservative vote more thinly. A bit like Scotland has been basically a one party state for as long as anyone can remember, first of all Labour and now SNP.
I think Corbyn provides a useful outlet for those stronger left wing views that definitely have a place in our society. But I am beginning to think the left wing in this country is just a bit too radical, controlling, dismissive - generally ineffective. They don't seem to get things one. In the UK, when you get strong left wingers in control e.g. in local government, they make a mess of it by focussing on things like putting spy cameras in people's bins and guilt-tripping hard working people for not paying even higher rates of tax so they can waste more money. On the continent, they focus on providing good services to the majority, such as good public infrastructure, street cleaning, refuse collection, cycle paths, etc..
Maybe the left wing should stop blaming the Eton elite, look inwards, and start criticising themselves, rather than basing their political rhetoric on repeatedly telling everyone how wonderful they are.