Well, if disgruntled Republicans want a third party alternative,

[socialist_n_TN]

7. A PWP won't have much of an impact THIS year.....

like a third party RW group would. However, it would set the stage for the PWP in the future, ESPECIALLY if the Democrats keep to a neoliberal economic agenda.

The biggest problem that most lefties have with the Dems is economic. Yes Dems are better than Republicans on economic matters, but that's not really saying a whole lot. Lefties do NOT support neoliberalism, center-rights do.

A viable PWP (starting with about 20% support if supported by the unions) will rapidly coalesce around economic matters if the RW splits as you speculated. This will result in one of two outcomes. 1) A viable multiparty democracy or 2) the Dems moving left economically and abandoning neoliberalism in order to compete with and absorb a PWP.

Now either outcome would bring up the question of where the neolib supporters go. It won't be the PWP and it won't be the proto-fascists.