It's the Economy in Michigan

— -- In the race to the White House, John McCain and Barack Obama face a tough crowd in Michigan.

Michigan voters who participated in exit polls after the state's primary overwhelmingly cited the economy as their top concern.

Facing economic troubles because of struggling industry, including an increasingly tenuous auto industry, Michigan also has the highest unemployment rate in the nation.

But as Michigan tries to renew its economy, Obama and McCain renew their battle for the state's 17 electoral votes.

Neither presidential candidate won Michigan's primary. Obama's name wasn't on the Democratic ballot because he chose not to participate, later resulting in a delegate debacle. McCain came in second to Mitt Romney, R-Mass., whose father once served as governor of the state.

Check back to find out when ABC News will motor to Michigan and break down this battleground state.