IA - 2016 Presidential Election: Bernie Sanders 48% - Donald Trump 43% - (NBC/WSJ/Marist 10/06/2015) chart & more info

Donald Trump
Bernie Sanders
  • Sanders +5

IA - 2016 Presidential Election: Jeb Bush 46% - Bernie Sanders 44% - (NBC/WSJ/Marist 10/06/2015) chart & more info

Bernie Sanders
Jeb Bush
  • Bush +2

IA - 2016 Presidential Election: Carly Fiorina 45% - Bernie Sanders 42% - (NBC/WSJ/Marist 10/06/2015) chart & more info

Bernie Sanders
Carly Fiorina
  • Fiorina +3

IA - 2016 Presidential Election: Carly Fiorina 52% - Hillary Clinton 38% - (NBC/WSJ/Marist 10/06/2015) chart & more info

Hillary Clinton
Carly Fiorina
  • Fiorina +14

IA - 2016 Presidential Election: Jeb Bush 50% - Hillary Clinton 40% - (NBC/WSJ/Marist 10/06/2015) chart & more info

Hillary Clinton
Jeb Bush
  • Bush +10

IA - 2016 Presidential Election: Donald Trump 48% - Hillary Clinton 41% - (NBC/WSJ/Marist 10/06/2015) chart & more info

Hillary Clinton
Donald Trump
  • Trump +7

IA - 2016 Presidential Election: Jeb Bush 46% - Joe Biden 44% - (NBC/Marist 09/06/2015) chart & more info

Joe Biden
Jeb Bush
  • Bush +2

IA - 2016 Presidential Election: Joe Biden 49% - Donald Trump 45% - (NBC/Marist 09/06/2015) chart & more info

Donald Trump
Joe Biden
  • Biden +4

IA - 2016 Presidential Election: Jeb Bush 50% - Hillary Clinton 39% - (NBC/Marist 09/06/2015) chart & more info

Hillary Clinton
Jeb Bush
  • Bush +11

IA - 2016 Presidential Election: Scott Walker 44% - Hillary Clinton 43% - (PPP 08/11/2015) chart & more info

Hillary Clinton
Scott Walker
  • Walker +1

IA - 2016 Presidential Election: Marco Rubio 43% - Hillary Clinton 42% - (PPP 08/11/2015) chart & more info

Hillary Clinton
Marco Rubio
  • Rubio +1

IA - 2016 Presidential Election: Hillary Clinton 41% - John Kasich 39% - (PPP 08/11/2015) chart & more info

John Kasich
Hillary Clinton
  • Clinton +2

IA - 2016 Presidential Election: Hillary Clinton 43% - Rand Paul 40% - (PPP 08/11/2015) chart & more info

Rand Paul
Hillary Clinton
  • Clinton +3

IA - 2016 Presidential Election: Hillary Clinton 44% - Ted Cruz 42% - (PPP 08/11/2015) chart & more info

Ted Cruz
Hillary Clinton
  • Clinton +2

IA - 2016 Presidential Election: Hillary Clinton 41% - Chris Christie 39% - (PPP 08/11/2015) chart & more info

Chris Christie
Hillary Clinton
  • Clinton +2