Romney falls below 50 percent, Gingrich still charging (Originally posted on Yahoo!'s "The Signal" Blog)

On Thursday Mitt Romney fell below 50 percent likelihood to attain the Republican nomination for the first time since Oct. 3.

The chart shows the likelihood of attaining the nomination for the four leading candidates since Thanksgiving morning. A slight downward trend for Romney turned into a downward slide directly following Sunday's Union Leader endorsement of Newt Gingrich, shown with the purple line:

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