Iowa Democratic Caucus:
Biden 23%
Warren 23%
Buttigieg 16%
Sanders 13%
Yang 5%
Bullock 4%
Booker 3%
Steyer 2%
Harris 2%
Gabbard 2%
Klobuchar 1%
Williamson 1%
Bennet 1%
Castro 0%
O'Rourke 0%
Delaney 0%
Sestak 0%
Ryan 0%
Messam 0%@EmersonPolling 10/13-16https://t.co/XQS2nTCeCv

— Political Polls (@Politics_Polls) October 17, 2019