Poll Watch: NBC News/Marist Iowa 2016 Republican Caucus Survey

NBC News/Marist Iowa 2016 GOP Caucus Poll

• Scott Walker 19% [15%] (5%) 
• Donald Trump 17%
• Jeb Bush 12% [16%] (12%)
• Ben Carson 8% [6%] 
• Mike Huckabee 7% [17%]
• Rand Paul 5% [7%] (12%) 
• Ted Cruz 4% [2%] (7%)
• Marco Rubio 4% [6%] (7%)
• Rick Perry 3% [4%] (7%)
• Chris Christie 2% [9%] (8%)
• John Kasich 2% 
• Carly Fiorina 1%
• Lindsey Graham 1% [1%]
• Bobby Jindal 1%
• Jim Gilmore 0%
• Rick Santorum 0% [5%] (9%)
• George Pataki 0%
• Undecided 14% [14%] (20%)

Survey of 342 potential GOP caucus-goers was conducted July 14-21, 2015.  The margin of error is +/- 5.3 percentage points. Results from the poll conducted February 3-10, 2015 are in square brackets. Results from the poll conducted July 7-13, 2014 are in parentheses.