US - 2016 GOP Presidential Primary: Donald Trump 28% - Ben Carson 23% - Marco Rubio 11% - (IBD/TIPP 10/31/2015) chart & more info

Ben Carson
Donald Trump
  • Trump +5

US - 2016 GOP Presidential Primary: Ben Carson 26% - Donald Trump 22% - Marco Rubio 8% - (CBS News/NYT 10/27/2015) chart & more info

Donald Trump
Ben Carson
  • Carson +4

US - 2016 GOP Presidential Primary: Donald Trump 32% - Ben Carson 22% - Marco Rubio 10% - (ABC News/Wash Post 10/21/2015) chart & more info

Ben Carson
Donald Trump
  • Trump +10

US - 2016 GOP Presidential Primary: Donald Trump 32% - Ben Carson 23% - Marco Rubio 14% - (Emerson College 10/20/2015) chart & more info

Ben Carson
Donald Trump
  • Trump +9

US - 2016 Democratic Presidential Primary: Hillary Clinton 68% - Bernie Sanders 20% - Lincoln Chafee 0% - (Emerson College 10/20/2015) chart & more info

Bernie Sanders
Hillary Clinton
  • Clinton +48

US - 2016 GOP Presidential Primary: Donald Trump 28% - Ben Carson 18% - Ted Cruz 10% - (Monmouth Univ. 10/20/2015) chart & more info

Ben Carson
Donald Trump
  • Trump +10

US - 2016 GOP Presidential Primary: Donald Trump 27% - Ben Carson 22% - Marco Rubio 8% - (CNN/ORC 10/20/2015) chart & more info

Ben Carson
Donald Trump
  • Trump +5

US - 2016 Democratic Presidential Primary: Hillary Clinton 49% - Bernie Sanders 29% - Joe Biden 15% - (NBC/WSJ 10/20/2015) chart & more info

Bernie Sanders
Hillary Clinton
  • Clinton +20

US - 2016 Democratic Presidential Primary: Hillary Clinton 54% - Bernie Sanders 23% - Joe Biden 16% - (ABC News/Wash Post 10/20/2015) chart & more info

Bernie Sanders
Hillary Clinton
  • Clinton +31

US - 2016 GOP Presidential Primary: Donald Trump 25% - Ben Carson 22% - Marco Rubio 13% - (NBC/WSJ 10/19/2015) chart & more info

Ben Carson
Donald Trump
  • Trump +3

US - 2016 Democratic Presidential Primary: Hillary Clinton 48% - Bernie Sanders 21% - Joe Biden 17% - (Monmouth Univ. 10/19/2015) chart & more info

Bernie Sanders
Hillary Clinton
  • Clinton +27

US - 2016 Presidential Election: Joe Biden 52% - Ben Carson 44% - (CNN/ORC 10/19/2015) chart & more info

Ben Carson
Joe Biden
  • Biden +8

US - 2016 Presidential Election: Joe Biden 53% - Donald Trump 43% - (CNN/ORC 10/19/2015) chart & more info

Donald Trump
Joe Biden
  • Biden +10

US - 2016 Presidential Election: Ben Carson 48% - Bernie Sanders 46% - (CNN/ORC 10/19/2015) chart & more info

Bernie Sanders
Ben Carson
  • Carson +2

US - 2016 Presidential Election: Bernie Sanders 53% - Donald Trump 44% - (CNN/ORC 10/19/2015) chart & more info

Donald Trump
Bernie Sanders
  • Sanders +9