The vast majority of Bernie supporters aren't in favor of overthrowing the government.
I'm not going to argue that the millions of Bernie primary voters would sign up for the Red Guard tomorrow morning... but people in general hate the government and politicians. That's like 75% of the appeal of the elderly guy who has pretty much just gotten worse politically over the course of his life - he's human and he genuinely appears to care about other humans. You could definitely juke the question (while still being true about 'overthrowing' the government) to get 55-60% to say yes. "Replace it with a parliamentary democracy" or even "split the country into multiple nation-states."
I'm not going to argue that the millions of Bernie primary voters would sign up for the Red Guard tomorrow morning... but people in general hate the government and politicians. That's like 75% of the appeal of the elderly guy who has pretty much just gotten worse politically over the course of his life - he's human and he genuinely appears to care about other humans. You could definitely juke the question (while still being true about 'overthrowing' the government) to get 55-60% to say yes. "Replace it with a parliamentary democracy" or even "split the country into multiple nation-states."