Final answer:
Donald Trump won Michigan, Pennsylvania, and Wisconsin in the 2016 presidential election due to higher-than-expected voter turnout in urban communities.
Step-by-step explanation:
Donald Trump won Michigan, Pennsylvania, and Wisconsin in the 2016 presidential election. One factor that contributed to his victory in these states was higher-than-expected voter turnout in urban communities.
Urban communities, which are typically more liberal-leaning, saw increased voter participation, and this boosted Trump's chances of winning these states. The phenomenon of high voter turnout in urban areas is not uncommon and has been observed in previous elections as well.