Republican Candidates Campaign ahead of Michigan and Arizon Primaries
Voters head to the polls Tuesday in U.S. Republican presidential hopeful Mitt Romney's native Michigan in a key primary that once again may reset the course of a unpredictable Republican presidential race.
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Republican presidential candidate Mitt Romney leaves the stage to greet supporters at a campaign rally at the Royal Oak Theater in Royal Oak, Michigan on February 27, 2012. (AP)
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Republican presidential candidate Mitt Romney shakes hands with musician Kid Rock after he performed a song at a campaign rally in Royal Oak, Michigan on February 27, 2012. (AP)
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Republican presidential candidate Rick Santorum speaks during a campaign rally in Kalamazoo, Michigan on February 27, 2012. (AP)
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Brothers, from left, Laine, Logan and Luke Hicks, recite the Pledge of Allegiance before Republican presidential candidate Rick Santorum speaks at a Kalamazoo, Michigan rally on February 27, 2012. (AP)