Nonetheless, in 2008 Mr Obama won Macomb County with a margin of eight points.

ECONOMIST: Lexington

George Bush carried Macomb County in 2004 even though John Kerry narrowly took the state of Michigan.

CNN: Obama looks to bolster weak spot in Michigan

For 20 years Stan Greenberg, a Democratic pollster, studied the blue-collar white voters of Macomb County near Detroit.

ECONOMIST: Lexington

If dental records cannot be found, authorities can also check with hospitals for any other X-rays that might have been taken, said Dr. Daniel Spitz, medical examiner in Macomb County, Michigan.

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This question is most acute in the swing county of Macomb, a bastion of socially conservative white workers.

ECONOMIST: Michigan is at the heart of the debate over the economy