Far more than Trump, Sanders has presented a specific platform that addresses the catastrophic failure of Global Free Market Capitalism in America and around the world. He is a Social Democrat.. not a Socialist as his opponents label him.
The problem is he is completely invested in the post structural credo of promoting feminism, homosexuality, abortion, euthenasia.. radical idividualism, moral relativism, gnostic eroticism.. that is fundamentally anti-family, anti-faith, anti-national. That alone will sabotage his economic agenda (as it will with our own nitwit PM Justin).
The Republican Party has been rotted out by it adherence of Goldwater, Nixon, Reagan, Bush(x2).. equally supported by Carter, Clinton, Obama.. neoconservative (neoliberal) economic ideology.
Both party's cohesion is crumbling from the inside.. but the old Republican Party has already collapsed. In order to survive the Democrats will have to abandon their alliance to the New Age cultural forces that control it. And it's not ready to do that yet.
I'm pretty sure that the Democrats will nominate Hillary and offer the American public a clear choice between the failed programs of the past, and the potential for a change in course.