The roots of a Republican political renaissance in 2012 lie in the Rust Belt.

That swath of manufacturing- based states in the Midwest -- Illinois, Ohio, Wisconsin, Michigan -- with tentacles that reach as far east as Pennsylvania, has been the epicenter of the economic difficulties in the country over the past few years.

Each state is hosting a competitive gubernatorial race this fall. Republicans argue that a clean sweep (or close to it) would immediately change the electoral calculus heading into the nationwide redistricting in 2011 and President Obama's reelection race in 2012.

"With apologies to the Northeast, South, Mountain West and Left Coast, the industrial Midwest is the measure of success or failure for the Republican Party," said GOP consultant Curt Anderson, who has worked in the region on and off for the past 15 years. "We cannot win a national election without doing well in this region, and we can't be healthy as a party without doing well there."

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