I think he has a far greater chance than most of the other offered candidates.
As for beating Ken, who knows. But if the majority are to be believed, Ken should not get back in.

Im not too sure where the scary stories of Boris come from. I have done much digging, and other than a few misquotations, and some poorly chosen statements, I cant find much.

I like his ability to speak his mind, and his not being afraid to offend with his opinions. No PC talk, just plain talk.
Also I like a good few of the things in his manifesto.