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Senator Marco Rubio, a possible 2016 presidential contender, is already doing that.
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Eight months ago, Allison didn't consider herself a serious presidential contender.
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Trump also debated Democratic presidential contender Joe Biden on Tuesday night.
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Former Republican presidential contender Rick Santorum also endorsed Akin on Wednesday.
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But for Republican presidential contender Carly Fiorina, that might not be so easy.
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Bush and George W. Bush, and Democratic presidential contender Hillary Clinton.
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Democratic presidential contender Joe Biden unexpectedly won the most states on Super Tuesday.
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The last few weeks have been ugly for Republican presidential contender Mitt Romney.
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Rick Perry, the former presidential contender who has said he will not seek re-election.
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No winning presidential contender has ever pursued a similar strategy.
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Vice presidential contender Ryan, a Wisconsin congressman, tops the bill of speakers on Wednesday.
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The Democratic presidential contender Joe Biden has picked Kamala Harris as his running mate.
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Democratic presidential contender Bernie Sanders championed a $15 minimum wage in his campaign.
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Time magazine has a story that scrutinizes Republican presidential contender Rudy Giuliani's dodgy business relationships.
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Former Republican senator, presidential contender and now political commentator Rick Santorum speaks to Susie Ferguson.
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Clinton, the leading Democratic presidential contender, made her first substantial statement on the issue on Tuesday.
