(The Hill) The latest poll of Iowa voters sparked reactions from several 2020 Democratic presidential candidates who said the large primary field means even candidates with relatively low numbers are viable contenders. The benchmark Des Moines Register/CNN poll released Saturday night showed former Vice President Joe Bidens lead narrowing though he retained a significant advantage with 24 percent support. Second place was a three-way statistical tie with Sen. Bernie Sanders (I-Vt.) at 16 percent Sen. Elizabeth Warren (D-Mass.) at 15 percent and South Bend Ind. Mayor Pete Buttigieg at 14 percent. Appearing Sunday morning on CNNs State of the Union" Sanders said its unlikely any candidate will achieve 50 percent support in Iowa. He noted neither he nor former Secretary of State Hillary Clinton were able to break 50 percent in the 2016 Iowa caucuses Clinton ultimately won by a fraction of a point and added the large field makes that an even more daunting task this year.