Even if AB wins the by election, he may find it's not quite what he expected (a crowning as a PM in waiting.. )
It seems like the right wing vote will be split, which may well give him the victory, but he will not have much support locally and many labour voters (like me) are pretty pissed at him planning to challenge KS and cosplaying being a "regular guy".
I'd also feel fairly annoyed if I'd voted for him as mayor.
Nothing like a bit of blind ambition, eh?