The campaign trail in South Carolina (31 images)

With the crucial Republican presidential primary to be held on Saturday, Jan. 21. Newt Gingrich has suddenly challenged the previously presumptive nominee Mitt Romney to the point at which the two are neck and neck in the polls.
Updated: Jan. 21, 2012 at 7:24 PM
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Children hold a poster of Mitt Romney outside of his camping headquarter in Greenville, South Carolina on January 21, 2012. Romney is making his final push as early poll numbers show his lead is slipping to Newt Gingrich. UPI/Kevin Dietsch..
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