IA - 2016 Presidential Election: Hillary Clinton 44% - Rand Paul 43% - (Gravis Marketing 04/22/2015) chart & more info

Rand Paul
Hillary Clinton
  • Clinton +1

IA - 2016 Presidential Election: Hillary Clinton 44% - Carly Fiorina 37% - (Gravis Marketing 04/22/2015) chart & more info

Carly Fiorina
Hillary Clinton
  • Clinton +7

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 GOP Presidential Primary: Jeb Bush 16% - Scott Walker 13% - Rand Paul 9% - (Gravis Marketing 04/22/2015) chart & more info

Scott Walker
Jeb Bush
  • Bush +3

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 Democratic Presidential Primary: Hillary Clinton 61% - Elizabeth Warren 19% - Joe Biden 7% - (Quinnipiac 02/26/2015) chart & more info

Elizabeth Warren
Hillary Clinton
  • Clinton +42

IA - 2016 GOP Presidential Primary: Scott Walker 25% - Rand Paul 13% - Mike Huckabee 11% - (Quinnipiac 02/25/2015) chart & more info

Rand Paul
Scott Walker
  • Walker +12