In many ways, the US Green Party epitomizes all that is wrong with the “Western Left.” For example, its obsession with “the environment,” gay marriage, “animal rights,” and “gun control” (i.e. it wages bourgeois liberal culture war, rather than proletarian class war). The GPUS also supports Keynesian capitalism with a “welfare state” rather than socialism. Basically, its like the New Deal combined with the contemporary Democratic Party’s bourgeois liberal culture warring.
That being said, the Green Party (and even the Libertarian and Constitution parties) play a helpful role by challenging the
anti-democratic ballot access restrictions that were put in place (beginning as far back as the 1930s) to prevent Communists from running for office. So for this reason, we should support the Greens' right to run candidates and have them actually printed on the ballot. Furthermore, in the absence of communist candidates, Green candidates provide an opportunity for workers to reject Wall Street’s wretched Democratic Party machine. Fighting the Democratic Party machine is a key task in this current period, because the reactionary, pro-imperialist, anti-communist labor aristocracy is married to it.
Cynthia McKinney, the Greens' 2008 presidential candidate, is also an excellent anti-imperialist fighter (she visited Tripoli last summer to document NATO war crimes as the bombs were falling down around her and earlier she went on a dangerous solidarity mission to Palestine). I'm glad that I voted for her. I think she did exactly what I wanted a presidential candidate to do: help lead the struggle against imperialism.
Most supporters of all bourgeois parties (including the Republicans) are working class, because we’re the vast majority of the population. For whatever its worth, the real life Green Party supporters I've encountered (outside of the several times I went to the local branch's boring meetings) were fellow workers at my low wage job. Regarding bourgeois intellectuals and petty-bourgeois strata, I do remember there being one professor (of English), but she moved away somewhere.