Republican presidential candidates from left, former Utah Gov. Jon Huntsman, Rep. Michele Bachmann of Minnesota, Rep. Ron Paul of Texas, businessman Herman Cain, Former Massachusetts Gov. Mitt Romney, former House Speaker Newt Gingrich, Texas Gov. Rick Perry, and former Pennsylvania Sen. Rick Santorum prepare before the CBS News/National Journal foreign policy debate in Spartanburg, S.C., on Nov. 12, 2011. The fluidity of the Republican nomination process and the increased importance of the debates raises questions about whether networks give short shrift to candidates they determine have little chance at reaching the White House. (AP Photo/Richard Shiro)
Read the article: Pre-primary debates challenge TV networks
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