MonmouthPoll @MonmouthPoll IOWA DEM CAUCUS POLL: Early #2020Dem preference: 28% @JoeBiden 19% @EWarren 11% @KamalaHarris 9% @SenSanders 8% @PeteButtigieg 3% @AmyKlobuchar 3% @TomSteyer 2% @SenGillibrand 2% @AndrewYang 15 others included in the poll receive 1% or less #IowaCaucus