Apologies for purely anecdotal evidence, please correct me if i'm wrong. But, among those I speak to there is a distinct whiff of intention to vote Labour as "not as bad as the Tories", even though we all know they're a bit shit. Without a viable left alternative, that's all they've got.
With an admittedly naive nod towards Brewster's Millions, is there not a case for a campaign based on a "none of the above" kind of tack? I can't be the only one noticing a general apathy towards mainstream politics. Instead of offering the left alternative within the current system, which the TUSC have demonstrated is a very minority vote in the usual low turnout, why not try and get a high turnout with a low number of votes cast? Demonstrate that the system is not working?