Rick Santorum won the Kansas caucuses in a rout on Saturday and Republican presidential front-runner Mitt Romney showed strength in Wyoming, a weekend prelude to suddenly pivotal Southern showdowns in the week ahead.
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Santorum wins Kansas caucus
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Santorum wins Louisiana presidential primary
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Presidential hopeful Rick Santorum visits the Tri-State
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McCain wins Republican primary
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McCain grabs early lead over Romney
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Kasich defeats Strickland
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Rick Santorum attracts his first congressional endorsement
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Rick Santorum endorses former rival Mitt Romney
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Romney sweeps three Republican primaries
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Romney to win Washington caucuses, FOX News projects
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Romney wins Iosco County, state
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Santorum wins Louisiana primary, but still trails Romney by wide margin
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Rick Santorum wins Minnesota, Missouri
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Romney wins Illinois Republican primary:
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Rick Santorum suspends campaign
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Santorum to campaign in Georgia
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Mitt Romney routed Newt Gingrich in the Florida primary Tuesday...