I think Corbyn's a pretty impressive character—I will always have time for a guy who led anti-apartheid campaigns before the cause was even popular, and has largely stuck to his principles on a range of issues over thirty years since.
However, he is not going to electrify voters. He's going to cop a beating. The problem is, none of the alternatives are any good either.
In my opinion it is pretty disgraceful that the CLPs, that are resoundingly supportive of Corbyn, are not being given a chance to select alternative candidates for the upcoming election.