IA - 2016 GOP Presidential Primary: Ted Cruz 25% - Donald Trump 22% - Marco Rubio 12% - (Des Moines Register/Bloomberg 01/13/2016) chart & more info

Donald Trump
Ted Cruz
  • Cruz +3

IA - 2016 GOP Presidential Primary: Ted Cruz 31% - Donald Trump 24% - Marco Rubio 12% - (Mason-Dixon 01/12/2016) chart & more info

Donald Trump
Ted Cruz
  • Cruz +7

IA - 2016 GOP Presidential Primary: Donald Trump 28% - Ted Cruz 26% - Marco Rubio 13% - (PPP 01/12/2016) chart & more info

Ted Cruz
Donald Trump
  • Trump +2

IA - 2016 GOP Presidential Primary: Donald Trump 29% - Ted Cruz 25% - Marco Rubio 10% - (ARG 01/11/2016) chart & more info

Ted Cruz
Donald Trump
  • Trump +4

IA - 2016 GOP Presidential Primary: Donald Trump 31% - Ted Cruz 29% - Marco Rubio 15% - (Quinnipiac 01/11/2016) chart & more info

Ted Cruz
Donald Trump
  • Trump +2

IA - 2016 GOP Presidential Primary: Ted Cruz 28% - Donald Trump 24% - Marco Rubio 13% - (NBC/WSJ/Marist 01/10/2016) chart & more info

Donald Trump
Ted Cruz
  • Cruz +4

IA - 2016 GOP Presidential Primary: Ted Cruz 27% - Donald Trump 23% - Marco Rubio 15% - (FOX News 01/08/2016) chart & more info

Donald Trump
Ted Cruz
  • Cruz +4

IA - 2016 GOP Presidential Primary: Donald Trump 28% - Ted Cruz 25% - Marco Rubio 14% - (PPP 12/15/2015) chart & more info

Ted Cruz
Donald Trump
  • Trump +3

IA - 2016 GOP Presidential Primary: Ted Cruz 30% - Donald Trump 23% - Marco Rubio 11% - (Loras College 12/15/2015) chart & more info

Donald Trump
Ted Cruz
  • Cruz +7

IA - 2016 GOP Presidential Primary: Donald Trump 28% - Ted Cruz 27% - Marco Rubio 14% - (Quinnipiac 12/14/2015) chart & more info

Ted Cruz
Donald Trump
  • Trump +1

IA - 2016 GOP Presidential Primary: Ted Cruz 28% - Donald Trump 26% - Ben Carson 10% - (FOX News 12/13/2015) chart & more info

Donald Trump
Ted Cruz
  • Cruz +2

IA - 2016 GOP Presidential Primary: Ted Cruz 31% - Donald Trump 21% - Ben Carson 13% - (Des Moines Register/Bloomberg 12/12/2015) chart & more info

Donald Trump
Ted Cruz
  • Cruz +10

IA - 2016 GOP Presidential Primary: Donald Trump 33% - Ted Cruz 20% - Marco Rubio 11% - (CNN/ORC 12/07/2015) chart & more info

Ted Cruz
Donald Trump
  • Trump +13

IA - 2016 GOP Presidential Primary: Ted Cruz 24% - Donald Trump 19% - Marco Rubio 17% - (Monmouth Univ. 12/07/2015) chart & more info

Donald Trump
Ted Cruz
  • Cruz +5

IA - 2016 GOP Presidential Primary: Ben Carson 27% - Donald Trump 15% - Ted Cruz 9% - (Iowa State Univ./WHO-HD 11/30/2015) chart & more info

Donald Trump
Ben Carson
  • Carson +12