anyone can realistically state that someone like Ted Cruz is a public servant. Cruz serves his Christ and will burn every bridge in Christendom in the serving.
Yet Republican primary voters may put Trump or Cruz at the top of their ticket. I'm sure they don't care what I think of that, but they are risking the dissolution of their beloved Republican Party if they do. The Trump voters are all anger and no brains. The Cruz voters are so imbued with the Afterworld that they have lodged their heads up their butts in this one.
Bernie is beholden to none of the money that motivates Trump. He is not flogging fundamental Christianity like Cruz. He's talking issues, with a powerful undergirding of financial justice.
From the size of his campaign audiences, I'd say folks are interested in hearing what he has to say.