IA - 2016 Presidential Election: Rand Paul 44% - Joe Biden 39% - (Quinnipiac 05/24/2013) chart & more info

Joe Biden
Rand Paul
  • Paul +5

IA - 2016 Presidential Election: Marco Rubio 40% - Joe Biden 39% - (Quinnipiac 05/24/2013) chart & more info

Joe Biden
Marco Rubio
  • Rubio +1

US - 2016 Democratic Presidential Primary: Hillary Clinton 63% - Joe Biden 13% - Andrew Cuomo 4% - (PPP 05/16/2013) chart & more info

Joe Biden
Hillary Clinton
  • Clinton +50

US - 2016 Presidential Election: Joe Biden 50% - Rand Paul 41% - (McClatchy/Marist 04/05/2013) chart & more info

Rand Paul
Joe Biden
  • Biden +9

US - 2016 Presidential Election: Joe Biden 53% - Marco Rubio 39% - (McClatchy/Marist 04/05/2013) chart & more info

Marco Rubio
Joe Biden
  • Biden +14

US - 2016 Presidential Election: Chris Christie 46% - Joe Biden 43% - (McClatchy/Marist 04/05/2013) chart & more info

Joe Biden
Chris Christie
  • Christie +3

US - 2016 Presidential Election: Joe Biden 49% - Jeb Bush 41% - (McClatchy/Marist 04/05/2013) chart & more info

Jeb Bush
Joe Biden
  • Biden +8

US - 2016 Presidential Election: Chris Christie 49% - Joe Biden 40% - (PPP 04/04/2013) chart & more info

Joe Biden
Chris Christie
  • Christie +9

US - 2016 Presidential Election: Joe Biden 47% - Rand Paul 43% - (PPP 04/04/2013) chart & more info

Rand Paul
Joe Biden
  • Biden +4

US - 2016 Presidential Election: Joe Biden 46% - Marco Rubio 44% - (PPP 04/04/2013) chart & more info

Marco Rubio
Joe Biden
  • Biden +2

US - 2016 Presidential Election: Joe Biden 48% - Paul Ryan 45% - (PPP 04/04/2013) chart & more info

Paul Ryan
Joe Biden
  • Biden +3

...
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