US - 2016 Democratic Presidential Primary: Hillary Clinton 46% - Bernie Sanders 30% - Martin O'Malley 7% - (Rasmussen 12/22/2015) chart & more info

Bernie Sanders
Hillary Clinton
  • Clinton +16

US - 2016 Democratic Presidential Primary: Hillary Clinton 61% - Bernie Sanders 30% - Martin O'Malley 2% - (Quinnipiac 12/22/2015) chart & more info

Bernie Sanders
Hillary Clinton
  • Clinton +31

US - 2016 Democratic Presidential Primary: Hillary Clinton 65% - Bernie Sanders 26% - Martin O'Malley 2% - (Emerson College 12/21/2015) chart & more info

Bernie Sanders
Hillary Clinton
  • Clinton +39

US - 2016 Democratic Presidential Primary: Hillary Clinton 56% - Bernie Sanders 28% - Martin O'Malley 9% - (PPP 12/18/2015) chart & more info

Bernie Sanders
Hillary Clinton
  • Clinton +28

US - 2016 Democratic Presidential Primary: Hillary Clinton 56% - Bernie Sanders 34% - Martin O'Malley 2% - (FOX News 12/18/2015) chart & more info

Bernie Sanders
Hillary Clinton
  • Clinton +22

US - 2016 Democratic Presidential Primary: Hillary Clinton 59% - Bernie Sanders 28% - Martin O'Malley 5% - (ABC News/Wash Post 12/18/2015) chart & more info

Bernie Sanders
Hillary Clinton
  • Clinton +31

US - 2016 Democratic Presidential Primary: Hillary Clinton 59% - Bernie Sanders 26% - Martin O'Malley 4% - (Monmouth Univ. 12/16/2015) chart & more info

Bernie Sanders
Hillary Clinton
  • Clinton +33

US - 2016 Democratic Presidential Primary: Hillary Clinton 56% - Bernie Sanders 37% - Martin O'Malley 4% - (NBC/WSJ 12/14/2015) chart & more info

Bernie Sanders
Hillary Clinton
  • Clinton +19

US - 2016 Democratic Presidential Primary: Hillary Clinton 52% - Bernie Sanders 32% - Martin O'Malley 2% - (CBS News/NYT 12/10/2015) chart & more info

Bernie Sanders
Hillary Clinton
  • Clinton +20

US - 2016 Democratic Presidential Primary: Hillary Clinton 56% - Bernie Sanders 29% - Martin O'Malley 4% - (Suffolk Univ/USA Today 12/08/2015) chart & more info

Bernie Sanders
Hillary Clinton
  • Clinton +27

US - 2016 Democratic Presidential Primary: Hillary Clinton 51% - Bernie Sanders 33% - Martin O'Malley 1% - (IBD/TIPP 12/07/2015) chart & more info

Bernie Sanders
Hillary Clinton
  • Clinton +18

US - 2016 Democratic Presidential Primary: Hillary Clinton 58% - Bernie Sanders 30% - Martin O'Malley 2% - (CNN/ORC 12/04/2015) chart & more info

Bernie Sanders
Hillary Clinton
  • Clinton +28

US - 2016 Democratic Presidential Primary: Hillary Clinton 60% - Bernie Sanders 30% - Martin O'Malley 2% - (Quinnipiac 12/02/2015) chart & more info

Bernie Sanders
Hillary Clinton
  • Clinton +30

US - 2016 Democratic Presidential Primary: Hillary Clinton 55% - Bernie Sanders 32% - Martin O'Malley 3% - (FOX News 11/22/2015) chart & more info

Bernie Sanders
Hillary Clinton
  • Clinton +23

US - 2016 Democratic Presidential Primary: Hillary Clinton 60% - Bernie Sanders 34% - Martin O'Malley 3% - (ABC News/Wash Post 11/22/2015) chart & more info

Bernie Sanders
Hillary Clinton
  • Clinton +26