Sep 12

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Tim Pawlenty. File photo by Win McNamee/Getty Images. Tim Pawlenty was once seen as potentially the biggest threat to Mitt Romney's quest for the Republican presidential nomination. Today, the former governor of Minnesota has become Romney's most high-profile endorser to…

Texas Gov. Rick Perry is the leading Republican presidential candidate, according to a new poll. File photo by Chip Somodevilla/Getty Images. Move over Mitt Romney, there's a new front-runner in town, and his name is Rick Perry. The Texas governor…

Texas Gov. Rick Perry campaigns in Iowa on Aug. 14. Photo by AFP/Getty. Gallup released a new poll Wednesday that changes -- at least for the moment -- the dynamics of the budding Republican presidential nomination fight: Texas Gov.