A highly anticipated poll set the tone for a final full day of campaigning in ice-cold Iowa on Sunday, with Donald Trump maintaining a big lead and Nikki Haley overtaking Ron DeSantis for second place in the Republican presidential race. The Des Moines Register/NBC News poll released late on Saturday gave Trump 48%, though his lead slipped by 3 percentage points from the December poll. Former South Carolina Governor Haley was second at 20%, up 4 points, followed by Florida Governor DeSantis with 16%, down 3 points.
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