The polls have not been closed long, but based on exit polls results several media organizations have declared President Barack Obama the winner of Michigan's 16 electoral votes on Tuesday, defeating Republican and native son Mitt Romney.
Media outlets also have called the overall race for Obama.
In the 2008 presidential election, the state voted for the Democratic candidate, and in recent elections has voted for the overall winner of the presidential race 3 out of 5 times.
Romney and Obama did not campaign aggressively in Michigan. The state has typically been a Democratic stronghold in recent presidential elections.
The economy was a key issue for many voters in the state, as was the auto bailout.
Voter turnout in Michigan was high throughout most of the day, with long lines in the morning in many cities in the Detroit area.