DES MOINES, Iowa--Newt Gingrich's support in Iowa is cratering, a new NBC/Marist poll out Friday morning indicates.
The poll shows Mitt Romney and Ron Paul leading the pack in with the support of 23 percent and 21 percent, respectively, of likely Republican caucusg0ers. Gingrich, who was leading in most Iowa polls three weeks ago, is in fifth place at 13 percent. The margin of error is plus or minus 4.7 percentage points.
There is a simple explanation for why Gingrich has lost more than half his support in the past three weeks: He has been the target of an aggressive onslaught of negative ads from Ron Paul and a pro-Romney Super PAC called Restore Our Future.
According to an analysis by Kantar Media's Campaign Media Analysis Group, 45 percent of all the political ads running in Iowa are negative spots against Gingrich.
Want evidence that these ads have an impact? Just listen to this Romney supporter following a campaign event in Mason City, Iowa, on Thursday.
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