Trump's position on trade helped him in the rust belt states among older Democrats. He turned out the vote better than his predecessors did.
Hillary lost the 2016 primary in Michigan, nothing to do with Trump.
She was polling ahead of Bernie by a wide margin in Michigan, and the state wasn’t even considered or talked about at all by the public. Then Bernie won it
I understand that. It was the same in the general election and really in every national election she's been in. She led Obama by 30 points and lost. Her margin was 2-1 over Sanders and it became a single digit race. Then we all saw what happened in the 2016 general after the polls favored her.