Quinnipiac Poll (National): The Donald J. Trump Undisputed Leader of GOP

++Donald J. Trump 27%

     Marco Rubio       17%

     Ben Carson        16%

     Ted Cruz            16%

     Jeb Bush             5%

No other candidate tops 3%.

++Democrats: Hillary Clinton 60%

                       Bernie Sanders 30%

                       Martin O'Malley  2%

                       Undecided          6%