Rick Santorum's position int he presidential candidate race relies heavily on his notion that he is a consistent conservative, especially in the current field.
At the GOP debate on Wednesday night, Mitt Romney and Ron Paul tag-teamed against Santorum to question his conservatism, reported the Washington Post.
Reports from the Atlanta Journal Constitution said that Newt Gingrich mostly stayed out of the cross-fire.
The National Journal has reported that Santorum's campaign party is now showing frustration after having held back suspicions of a Romney-Paul alliance.
"Clearly there is a tag-team strategy between Ron Paul and Mitt Romney," top Santorum strategist John Brabender fumed to reporters after the debate.
Paul has been running an anti-Santorum ad in Michigan while not campaigning for himself in the area, Romney's home state.
However, the National Journal has reported that Gingrich is helping Santorum in Michigan the same way Paul has been supporting Romney.
A Gingrich spokesperson told a Washington Examiner reporter that Gingrich will not be making an effort to compete in Michigan so he doesn't peel votes away from Santorum in order to defeat Romney.

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