IA - 2016 Democratic Presidential Primary: Bernie Sanders 49% - Hillary Clinton 46% - Martin O'Malley 3% - (Quinnipiac 02/01/2016) chart & more info

Hillary Clinton
Bernie Sanders
  • Sanders +3

IA - 2016 GOP Presidential Primary: Donald Trump 31% - Ted Cruz 24% - Marco Rubio 17% - (Quinnipiac 02/01/2016) chart & more info

Ted Cruz
Donald Trump
  • Trump +7

IA - 2016 GOP Presidential Primary: Donald Trump 20% - Ted Cruz 19% - Marco Rubio 19% - (Opinion Savvy 02/01/2016) chart & more info

Ted Cruz
Donald Trump
  • Trump +1

IA - 2016 Democratic Presidential Primary: Hillary Clinton 51% - Bernie Sanders 43% - Martin O'Malley 4% - (Emerson College 02/01/2016) chart & more info

Bernie Sanders
Hillary Clinton
  • Clinton +8

IA - 2016 GOP Presidential Primary: Donald Trump 27% - Ted Cruz 26% - Marco Rubio 22% - (Emerson College 02/01/2016) chart & more info

Ted Cruz
Donald Trump
  • Trump +1

IA - 2016 Democratic Presidential Primary: Hillary Clinton 45% - Bernie Sanders 42% - Martin O'Malley 3% - (Des Moines Register/Bloomberg 01/30/2016) chart & more info

Bernie Sanders
Hillary Clinton
  • Clinton +3

IA - 2016 GOP Presidential Primary: Donald Trump 28% - Ted Cruz 23% - Marco Rubio 15% - (Des Moines Register/Bloomberg 01/30/2016) chart & more info

Ted Cruz
Donald Trump
  • Trump +5

IA - 2016 Democratic Presidential Primary: Hillary Clinton 48% - Bernie Sanders 40% - Martin O'Malley 7% - (PPP 01/29/2016) chart & more info

Bernie Sanders
Hillary Clinton
  • Clinton +8

IA - 2016 GOP Presidential Primary: Donald Trump 31% - Ted Cruz 23% - Marco Rubio 14% - (PPP 01/28/2016) chart & more info

Ted Cruz
Donald Trump
  • Trump +8

IA - 2016 Democratic Presidential Primary: Hillary Clinton 47% - Bernie Sanders 42% - Martin O'Malley 6% - (Monmouth Univ. 01/28/2016) chart & more info

Bernie Sanders
Hillary Clinton
  • Clinton +5

IA - 2016 Democratic Presidential Primary: Hillary Clinton 48% - Bernie Sanders 45% - Martin O'Malley 3% - (NBC/WSJ/Marist 01/28/2016) chart & more info

Bernie Sanders
Hillary Clinton
  • Clinton +3

IA - 2016 GOP Presidential Primary: Donald Trump 32% - Ted Cruz 25% - Marco Rubio 18% - (NBC/WSJ/Marist 01/28/2016) chart & more info

Ted Cruz
Donald Trump
  • Trump +7

IA - 2016 GOP Presidential Primary: Donald Trump 30% - Ted Cruz 23% - Marco Rubio 16% - (Monmouth Univ. 01/27/2016) chart & more info

Ted Cruz
Donald Trump
  • Trump +7

IA - 2016 Democratic Presidential Primary: Bernie Sanders 49% - Hillary Clinton 45% - Martin O'Malley 4% - (Quinnipiac 01/27/2016) chart & more info

Hillary Clinton
Bernie Sanders
  • Sanders +4

IA - 2016 GOP Presidential Primary: Ted Cruz 26% - Donald Trump 19% - Marco Rubio 12% - (Iowa State Univ./WHO-HD 01/26/2016) chart & more info

Donald Trump
Ted Cruz
  • Cruz +7

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