Bernie Sanders ............................................... 47% (+5)
Donald Trump ................................................. 42%
Donald Trump ................................................. 42%
Hillary Clinton.................................................. 42% (- -)
...
Bernie Sanders ............................................... 45% (+3)
Ted Cruz ......................................................... 42%
Ted Cruz ......................................................... 45%
Hillary Clinton.................................................. 42% (-3)
...
Bernie Sanders ............................................... 43% (+1)
Marco Rubio ................................................... 42%
Marco Rubio ................................................... 46%
Hillary Clinton.................................................. 41% (-5)
...
Bernie Sanders ............................................... 44% (+4)
Ben Carson..................................................... 40%
Ben Carson..................................................... 46%
Hillary Clinton.................................................. 42% (-4)
...
Bernie Sanders ............................................... 47% (+8)
Jeb Bush......................................................... 39%
Jeb Bush......................................................... 43%
Hillary Clinton.................................................. 40% (-3)
http://www.publicpolicypolling.com/pdf/2015/PPP_Release_IA_11216.pdf