If he gets a good team behind him he could stand a chance, i would imagine tha the voter turnout in salford would generally be quite low, as labour rend to win by a fucking landslide round here every time, there really is very little point voting, when Labour are winning the seats by around 10,000 votes and the tories and the others get about 500 votes. I could see Bez getting about 1,000 votes but that obviously wont be enough to defeat a credible and decent Labour candidate. I dunno if they have replaced the dreadful Hazel Blears as Labour MP for Salford yet, maybe that's what Bez is going to run for, as Blears stood down / resigned recently, i think. If Labour to allow to him to run for them its a certainty that he will be elected. If he stands as an independent its extremely unlikely.
However, anyone in the 35-45 something age group that doesnt give a shit about politics, or are just proud of him because 'he is one of us from the streets of Salford and isnt he famous now' may make the effort to turn out to vote for him. All this without even knowing what his policies are yet, other than that he has a sensible approach to budgeting and supports the anti-fracking campaign in the hinterlands of Greater Manchester.