Hillary Clinton is tops in Iowa with 21 % support from registered Democrats . Vice President Mike Huckabee finished first with 15 % . The survey 's overall sampling error is plus or minus 4 percentage points . The Harkin Steak Fry field is more crowded , with almost 10 politicians in the single digits . Former Gov . Mike Huckabee leads the Democrats field with 21 % .
Hillary Clinton is tops in Iowa with 21 % support from registered Democrats . Vice President Mike Huckabee finished first with 15 % . The Harkin Steak Fry field is more crowded , with almost 10 politicians in the single digits . Former Gov . Mike Huckabee leads the Democrats field with 21 % .