OH - 2016 Democratic Presidential Primary: Hillary Clinton 47% - Bernie Sanders 17% - Joe Biden 14% - (Quinnipiac 08/20/2015) chart & more info

Bernie Sanders
Hillary Clinton
  • Clinton +30

FL - 2016 Democratic Presidential Primary: Hillary Clinton 48% - Bernie Sanders 15% - Joe Biden 11% - (Quinnipiac 08/20/2015) chart & more info

Bernie Sanders
Hillary Clinton
  • Clinton +33

US - 2016 Democratic Presidential Primary: Hillary Clinton 47% - Bernie Sanders 29% - Joe Biden 14% - (CNN/ORC 08/19/2015) chart & more info

Bernie Sanders
Hillary Clinton
  • Clinton +18

NC - 2016 Democratic Presidential Primary: Hillary Clinton 55% - Bernie Sanders 19% - Martin O'Malley 2% - (PPP 08/19/2015) chart & more info

Bernie Sanders
Hillary Clinton
  • Clinton +36

US - 2016 Democratic Presidential Primary: Hillary Clinton 49% - Bernie Sanders 30% - Joe Biden 10% - (FOX News 08/16/2015) chart & more info

Bernie Sanders
Hillary Clinton
  • Clinton +19

IA - 2016 Democratic Presidential Primary: Hillary Clinton 50% - Bernie Sanders 31% - Joe Biden 12% - (CNN/ORC 08/12/2015) chart & more info

Bernie Sanders
Hillary Clinton
  • Clinton +19

NH - 2016 Democratic Presidential Primary: Bernie Sanders 44% - Hillary Clinton 37% - Joe Biden 9% - (Boston Herald/Franklin Pierce Univ. 08/12/2015) chart & more info

Hillary Clinton
Bernie Sanders
  • Sanders +7

MO - 2016 Democratic Presidential Primary: Hillary Clinton 53% - Bernie Sanders 25% - Lincoln Chafee 1% - (PPP 08/12/2015) chart & more info

Bernie Sanders
Hillary Clinton
  • Clinton +28

IA - 2016 Democratic Presidential Primary: Hillary Clinton 52% - Bernie Sanders 25% - Martin O'Malley 7% - (PPP 08/10/2015) chart & more info

Bernie Sanders
Hillary Clinton
  • Clinton +27

NH - 2016 Democratic Presidential Primary: Hillary Clinton 42% - Bernie Sanders 36% - Joe Biden 5% - (WMUR/UNH 08/04/2015) chart & more info

Bernie Sanders
Hillary Clinton
  • Clinton +6

US - 2016 Democratic Presidential Primary: Hillary Clinton 52% - Bernie Sanders 16% - Joe Biden 12% - (Monmouth Univ. 08/04/2015) chart & more info

Bernie Sanders
Hillary Clinton
  • Clinton +36

US - 2016 Democratic Presidential Primary: Hillary Clinton 58% - Bernie Sanders 17% - Joe Biden 11% - (CBS News 08/04/2015) chart & more info

Bernie Sanders
Hillary Clinton
  • Clinton +41

MN - 2016 Democratic Presidential Primary: Hillary Clinton 50% - Bernie Sanders 32% - Lincoln Chafee 3% - (PPP 08/04/2015) chart & more info

Bernie Sanders
Hillary Clinton
  • Clinton +18

US - 2016 Democratic Presidential Primary: Hillary Clinton 59% - Bernie Sanders 25% - Martin O'Malley 3% - (NBC/WSJ 08/03/2015) chart & more info

Bernie Sanders
Hillary Clinton
  • Clinton +34

US - 2016 Democratic Presidential Primary: Hillary Clinton 51% - Bernie Sanders 22% - Martin O'Malley 1% - (FOX News 08/03/2015) chart & more info

Bernie Sanders
Hillary Clinton
  • Clinton +29

US - 2016 Democratic Presidential Primary: Hillary Clinton 55% - Bernie Sanders 17% - Martin O'Malley 1% - (Quinnipiac 07/30/2015) chart & more info

Bernie Sanders
Hillary Clinton
  • Clinton +38

US - 2016 Democratic Presidential Primary: Hillary Clinton 54% - Bernie Sanders 33% - Joe Biden 9% - (Emerson College 07/30/2015) chart & more info

Bernie Sanders
Hillary Clinton
  • Clinton +21

IL - 2016 Democratic Presidential Primary: Hillary Clinton 60% - Bernie Sanders 23% - Martin O'Malley 4% - (PPP 07/29/2015) chart & more info

Bernie Sanders
Hillary Clinton
  • Clinton +37

US - 2016 Democratic Presidential Primary: Hillary Clinton 56% - Bernie Sanders 19% - Martin O'Malley 0% - (CNN/ORC 07/26/2015) chart & more info

Bernie Sanders
Hillary Clinton
  • Clinton +37

IA - 2016 Democratic Presidential Primary: Hillary Clinton 55% - Bernie Sanders 26% - Martin O'Malley 4% - (NBC/Marist 07/26/2015) chart & more info

Bernie Sanders
Hillary Clinton
  • Clinton +29