It is telling that Trump won Macomb County (a suburban area to the north of Detroit) by 11%... and he is down by anywhere from 4% to Sanders to 10% to Bloomberg. Such is more than enough to swing Michigan as a whole away from Trump.
If anything Michigan probably ends up being to Trump what Indiana was to Obama.
Indiana had the perfect storm for Defeating Republicans there in 2008. Figure that one part of Indiana, the part that depends upon the production of RV's, felt the triple-whammy of an economic meltdown, tight credit, and exorbitant gas prices. After those went away, Indiana could return to its norm of being about 12% more R than the US as a whole.
I'm not saying that Michigan will go against Trump by double digits unless he completely melts down. High single-digits for the D? Highly likely based on this poll.
