Mitt Romney has a big problem in Iowa, and it's on basic cable. Fox News viewers really don't like the former Massachusetts governor, with just 12% saying they back him—compared to nearly half for Gingrich, according to a New York Times/CBS poll. Overall in the state, Gingrich led 31% to 18%. The Fox gap could be a major problem for Romney, because a whopping 40% of Republican voters in Iowa call the network their primary news source. (More Fox News stories.)