The Canadians weigh in again:
52-43 Obama
Methodology: From October 18 to October 20, 2012, Angus Reid Public Opinion conducted an online survey among 551 randomly selected Michigan likely voters who are Springboard America panelists. The margin of error—which measures sampling variability—is +/- 4.2%. The results have been statistically weighted according to the most current age and gender data to ensure samples representative of the entire adult population of Michigan. Discrepancies in or between totals are due to rounding.
http://www.angus-reid.com/polls/47231/obama-holds-comfortable-lead-over-romney-in-michigan