Former Senator Rick Santorum won the Republican primaries on Tuesday in the key states of Alabama and Mississippi.
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Santorum wins key states of Alabama, Mississippi
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Obama wins Georgia Democratic primary
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Rick Santorum drops out of presidential campaign
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Rick Santorum Suspends presidential campaign
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McCain wins Florida Republican primary
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McCain wins Texas
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Mitt Romney clinches Republican nomination with Texas win
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Hillary Clinton wins Pennsylvania Primary
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Mitt Romney routed Newt Gingrich in the Florida primary Tuesday...
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Rick Santorum wins Minnesota, Missouri
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Santorum suspends presidential campaign
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Herman Cain wins the Florida Straw Poll
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John McCain clinches Republican nomination
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Barack Obama wins Mississippi
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Republican wins Massachusetts Senate race
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Rick Santorum makes campaign stop in Rock Hill
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Santorum raises more than $4 million in January