Hillary won the popular tally by what, 3 million votes? I think Bernie would have exceeded that, and carried MI, OH, PA, WI, and possibly Florida. I don't know what the electoral votes would have amounted to in that scenario, but that sounds like a pretty comfortable margin to me.
It's speculation. I'd like to think that MI, OH, PA and WI are not racist bastions. A majority of voters in those states were OK with voting for a white supremacist. Just saying, I'd never vote for somebody who says the things Trump did. I'm suspicious of anybody who would that they are a closet klansman or klanswoman.
And then again, consider single payer healthcare, which is a darling of Sanders supporters.
If a vote were put to the state of MI for state-level single payer health care with the tax bill per person at about 5,000 per person for all 10 million people or total tab of $50 billion, do you think it would pass? Similar measures in Colorado or Vermont didn't pass. Do you think after a cost for this is estimated and reported in the right wing media it would be a positive or a negative for Bernie?
By his primary policy positions, Bernie would be running on a national policy similar to this. Do you think once the cost is factored in, it would be a winning issue for him in Michigan?
Michigan hasn't passed a $15 minimum wage law. Do you think this policy would help or hurt him? If it helps him, why hasn't Michigan already passed that minimum wage into law?
2/3 of your state's representatives in Congress are Republicans. But then again, both your state's senators are Democrats so it's not clear which way your state leans from that survey. Not a liberal bastion, however.
I don't know, man. Once the issues get discussed and fake news comes to play, I wouldn't be as confident as you. Based on how they vote, voters say they are more conservative than the opinion polls you cite seem to indicate.