There is ZERO chance Bernie will win the Presidency. None. Among his supporters he has a passionate following but not enough to win a national election. He wants everything to be about "the issues". And no question, the issues are important. But the Presidency is more than just issues. It's about leadership and connecting with the people. There's no way this country will support Bernie being the CIC. He is not a leader in that way. He can rally a movement, I'll give him that. But that's not the same as leading the country.
By that standard trump shouldn't be president because he connects with only his base. Other repubs hold their nose to support him.