Barack Obama won Michigan in 2008 by a margin of 16.45%. That was 9.19% more Democratic than on average to the rest of the country.
I think his numbers in Michigan were inflated (as in Wisconsin, Illinois, and California for different reasons) because of the economic collapse and McCain's high-profile and fumbled pull out of the state late in the season... but that it's still going to be a difficult state for Republicans to win. Unemployment is high, but goodness, they know it didn't start in 2008 and Obama saved GM and made the best go of saving Chrysler anyone can do.
