Yes, folks, Bernie Sanders can win. If you want to know why, then just consider how and why Trump won. Sanders is to the Dems as Trump is to the GOP - a populist outsider who thrills and motivates his supporters by scratching the itch of their perceived oppression.
If Trump insists on making this election a referendum on himself rather than on the economy (and you know damn well he and the media will), Sanders can win. That is why it is doggone foolish to assume that Bernie is Trump's best possible opponent. The progs know that Bernie can win, because they know that Trump is uniquely vulnerable. And the risk if he were to win is existential.