What % of the vote would Sanders get in Vermont as a 3rd party candidate?

[Citizen Hats]

If he united the socialist parties (which is improbable if not impossible), he could gain traction in the northeast, particularly Vermont.  There's a slight chance he could win it, but the vote would have to be so split that's practically impossible.  He would have to win a plurality of the vote; I doubt he could win a majority. 

The only reason those parties exist is to be a recepticle for cranks who aren't nice enough to play well with outhers