WI - 2016 Democratic Presidential Primary: Hillary Clinton 44% - Bernie Sanders 32% - Joe Biden 12% - (Marquette Univ. 08/20/2015) chart & more info

Bernie Sanders
Hillary Clinton
  • Clinton +12

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

PA - 2016 Democratic Presidential Primary: Hillary Clinton 45% - Bernie Sanders 19% - Joe Biden 17% - (Quinnipiac 08/20/2015) chart & more info

Bernie Sanders
Hillary Clinton
  • Clinton +26

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 47% - Bernie Sanders 29% - Joe Biden 14% - (CNN/ORC 08/19/2015) chart & more info

Bernie Sanders
Hillary Clinton
  • Clinton +18

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

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

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

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

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 58% - Bernie Sanders 17% - Joe Biden 11% - (CBS News 08/04/2015) chart & more info

Bernie Sanders
Hillary Clinton
  • Clinton +41