Voters who support populist movements do so because they believe that current elites fail truly to represent them. They are not against representative democracy as such: they just want different representatives – people whom they consider morally pure.
选民支持民粹运动是因为他们认为现有精英没有资格充当他们的代表。他们本身并不反对代议制民主：他们只想要道德上更纯粹的人作为代表。