The #BernieOrBust slogan was widely adopted in the 2016 Presidential Elections by ardent supporters of Senator Bernie Sanders. These devotees insisted that they would not vote for any candidate (namely Hillary Clinton, the eventual Democratic Party nominee) in the eventual general election showdown with Trump. Four years later, the slogan has resurfaced as a credible threat directed toward what many perceive to be a recalcitrant Democratic Party establishment. In what follows, I do not claim that “#BernieOrBusters” are morally justified (all things considered), but merely offer a possible defence for why some #BernieOrBust advocates are behaving in a rationally justified manner.  I grant two premises amenable to most critics of #BernieOrBusters: first, Trump is a highly problematic candidate in his actions and dispositions; second, whilst not …