IA - 2016 Presidential Election: Hillary Clinton 45% - Ben Carson 37% - (Gravis Marketing 04/22/2015) chart & more info

Ben Carson
Hillary Clinton
  • Clinton +8

IA - 2016 Presidential Election: Hillary Clinton 45% - Marco Rubio 42% - (Gravis Marketing 04/22/2015) chart & more info

Marco Rubio
Hillary Clinton
  • Clinton +3

IA - 2016 Presidential Election: Hillary Clinton 47% - Ted Cruz 40% - (Gravis Marketing 04/22/2015) chart & more info

Ted Cruz
Hillary Clinton
  • Clinton +7

IA - 2016 Presidential Election: Rand Paul 43% - Hillary Clinton 42% - (Quinnipiac 04/09/2015) chart & more info

Hillary Clinton
Rand Paul
  • Paul +1

IA - 2016 Presidential Election: Hillary Clinton 41% - Jeb Bush 40% - (Quinnipiac 04/09/2015) chart & more info

Jeb Bush
Hillary Clinton
  • Clinton +1

IA - 2016 Presidential Election: Hillary Clinton 41% - Chris Christie 39% - (Quinnipiac 04/09/2015) chart & more info

Chris Christie
Hillary Clinton
  • Clinton +2

IA - 2016 Presidential Election: Hillary Clinton 44% - Scott Walker 40% - (Quinnipiac 04/09/2015) chart & more info

Scott Walker
Hillary Clinton
  • Clinton +4

IA - 2016 Presidential Election: Hillary Clinton 43% - Marco Rubio 40% - (Quinnipiac 04/09/2015) chart & more info

Marco Rubio
Hillary Clinton
  • Clinton +3

IA - 2016 Presidential Election: Hillary Clinton 43% - Ted Cruz 40% - (Quinnipiac 04/09/2015) chart & more info

Ted Cruz
Hillary Clinton
  • Clinton +3

IA - 2016 Presidential Election: Hillary Clinton 42% - Mike Huckabee 42% - (Quinnipiac 04/09/2015) chart & more info

Mike Huckabee
Hillary Clinton
  • Huckabee 0

IA - 2016 Presidential Election: Hillary Clinton 45% - Rand Paul 37% - (Quinnipiac 02/18/2015) chart & more info

Rand Paul
Hillary Clinton
  • Clinton +8

IA - 2016 Presidential Election: Hillary Clinton 45% - Mike Huckabee 38% - (Quinnipiac 02/18/2015) chart & more info

Mike Huckabee
Hillary Clinton
  • Clinton +7

IA - 2016 Presidential Election: Hillary Clinton 45% - Scott Walker 35% - (Quinnipiac 02/18/2015) chart & more info

Scott Walker
Hillary Clinton
  • Clinton +10

IA - 2016 Presidential Election: Hillary Clinton 44% - Chris Christie 34% - (Quinnipiac 02/18/2015) chart & more info

Chris Christie
Hillary Clinton
  • Clinton +10

IA - 2016 Presidential Election: Hillary Clinton 45% - Jeb Bush 35% - (Quinnipiac 02/18/2015) chart & more info

Jeb Bush
Hillary Clinton
  • Clinton +10