A recent Monmouth University poll from Iowa has Trump and Carson tied.
Donald Trump 23%
Ben Carson 23%
Carly Fiorina 10%
Ted Cruz 9%
Scott Walker 7%
Jeb Bush 5%
Marco Rubio 4%
John Kasich 4%
Rand Paul 3%
Mike Huckabee 2%
Rick Santorum 2%
Chris Christie 1%
Bobby Jindal 1%
Rick Perry 1%
Jim Gilmore 0%
Lindsey Graham 0%
George Pataki 0%
