NC - 2016 Democratic Presidential Primary: Hillary Clinton 57% - Joe Biden 15% - Elizabeth Warren 9% - (Suffolk Univ/USA Today 08/20/2014) chart & more info

Joe Biden
Hillary Clinton
  • Clinton +42

FL - 2016 Presidential Election: Rick Perry 44% - Joe Biden 43% - (SurveyUSA 08/06/2014) chart & more info

Joe Biden
Rick Perry
  • Perry +1

US - 2016 Democratic Presidential Primary: Hillary Clinton 64% - Joe Biden 12% - Elizabeth Warren 9% - (FOX News 07/28/2014) chart & more info

Joe Biden
Hillary Clinton
  • Clinton +52

US - 2016 Democratic Presidential Primary: Hillary Clinton 67% - Joe Biden 8% - Elizabeth Warren 10% - (CNN/Opinion Research 07/27/2014) chart & more info

Joe Biden
Hillary Clinton
  • Clinton +59

FL - 2016 Democratic Presidential Primary: Hillary Clinton 67% - Joe Biden 8% - Elizabeth Warren 8% - (Quinnipiac 07/24/2014) chart & more info

Joe Biden
Hillary Clinton
  • Clinton +59

FL - 2016 Presidential Election: Chris Christie 48% - Joe Biden 39% - (SurveyUSA 07/22/2014) chart & more info

Joe Biden
Chris Christie
  • Christie +9

NH - 2016 Democratic Presidential Primary: Hillary Clinton 59% - Joe Biden 14% - Elizabeth Warren 8% - (WMUR/UNH 07/10/2014) chart & more info

Joe Biden
Hillary Clinton
  • Clinton +45

US - 2016 GOP Presidential Primary: Hillary Clinton 48% - Joe Biden 9% - Elizabeth Warren 11% - (Quinnipiac 07/08/2014) chart & more info

Joe Biden
Hillary Clinton
  • Clinton +39

FL - 2016 Presidential Election: Marco Rubio 46% - Joe Biden 43% - (SurveyUSA 06/24/2014) chart & more info

Joe Biden
Marco Rubio
  • Rubio +3

FL - 2016 Presidential Election: Jeb Bush 47% - Joe Biden 38% - (SurveyUSA 06/10/2014) chart & more info

Joe Biden
Jeb Bush
  • Bush +9

US - 2016 Democratic Presidential Primary: Hillary Clinton 66% - Joe Biden 12% - Elizabeth Warren 7% - (ABC News/Wash Post 06/08/2014) chart & more info

Joe Biden
Hillary Clinton
  • Clinton +54

PA - 2016 Democratic Presidential Primary: Hillary Clinton 65% - Joe Biden 9% - Andrew Cuomo 5% - (PPP 06/05/2014) chart & more info

Joe Biden
Hillary Clinton
  • Clinton +56

SC - 2016 Democratic Presidential Primary: Hillary Clinton 50% - Joe Biden 12% - Andrew Cuomo 2% - (Clemson Univ. 06/05/2014) chart & more info

Joe Biden
Hillary Clinton
  • Clinton +38

IA - 2016 Democratic Presidential Primary: Hillary Clinton 59% - Joe Biden 12% - Elizabeth Warren 11% - (PPP 05/22/2014) chart & more info

Joe Biden
Hillary Clinton
  • Clinton +47

FL - 2016 Democratic Presidential Primary: Hillary Clinton 64% - Joe Biden 11% - Elizabeth Warren 6% - (Quinnipiac 05/01/2014) chart & more info

Joe Biden
Hillary Clinton
  • Clinton +53