Roseanne Barr has more name recognition than Biafra, and her presidential campaigns have never gotten significant traction. A Biafra campaign likely looks very different from a Nader one. Nader was a guy who could be taken seriously. His lack of personal charisma or particularly outrageous views made him seem like he wasn't just another novelty candidate, which a punk rocker running for president definitely would be perceived as.
I would say that Trump, similarly, would be widely dismissed as a novelty candidate and wouldn't attract many voters, but I've been wrong in the recent past on that matter. So fuck it, Trump probably wins. Donald Trump has to console a mourning nation after the WTC attacks. It's uncomfortable for everyone.