"The question I am asking myself now is whether this means the polls are off in other Midwest states that are holding open primaries. I’m talking specifically about Illinois and Ohio, both of which vote next Tuesday. The FiveThirtyEight polling average in Illinois gives Clinton a 37 percentage point lead, while the average in Ohio gives her a 20 percentage point lead. If Michigan was just a fluke (which is possible), then tonight will be forgotten soon enough. If, however, pollsters are missing something more fundamental about the electorate, then the Ohio and Illinois primaries could be a lot closer than expected.
Either way, this result will send a shock wave through the press. Heck, as a member of the press, you might be able to tell how surprised I am. This will likely lead to increased press coverage of the Democratic race, which Sanders desperately needs to be competitive next Tuesday and beyond."