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President Obama's approval rating in Michigan stands at 50 percent among registered voters.
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The NBC/WSJ/Marist poll was conducted March 1-3 among 2,229 registered voters (which has a margin of error of plus-minus 2.1 percentage points), 546 likely Democratic primary voters (plus-minus 4.2 percentage points) and 482 likely Republican primary voters (plus-minus 4.5 percentage points).
http://www.nbcnews.com/politics/2016-election/donald-trump-hillary-clinton-hold-big-leads-michigan-poll-n532576
