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Democratic candidates race across Iowa as new poll gives Biden an edge

The four 2020 Democrats that have been stuck in D.C. presiding over President Trump’s impeachment trial are set to spend the weekend criss-crossing Iowa ahead of Monday night’s caucus. A new poll shows Joe Biden, who along with Buttigieg got free reign among voters as the only two frontrunners not in the Senate, holding a slight edge over Bernie Sanders among likely caucus goers. Ed O’Keefe is in Iowa to break down what voters might be thinking.
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