Poll Watch: Gravis Marketing/One America News Network (R) Iowa 2016 Republican Caucus Survey

Gravis Marketing/OAN (R) Iowa 2016 GOP Caucus Poll

• Donald Trump 18.8% {31.7%} [30.9%]
• Ben Carson 14.1% {15.8%} [5.1%] (12%) {9%} [5%]
• Ted Cruz 10.6% {6.9%} [5.5%] (6%) {6%} [4%] (7%)
• Carly Fiorina 9.7% {4.6%} [4.3%] (5%) {3%} [3%] 
• Marco Rubio 8.9% {5.8%} [2.8%] (13%) {12%} [7%] (4%)  
• Jeb Bush 6.9% {4.1%} [10.0%] (10%) {16%} [10%] (14%)
• John Kasich 2.6% {1.4%} [5.0%]
• Rand Paul 2.4% {1.3%} [0.8%] (4%) {9%} [10%] (8%)
• Mike Huckabee 1.8% {2.6%} [6.0%] (8%) {8%} [7%] (9%)
• Lindsey Graham 1.8% {0.4%} [1.0%]
• Bobby Jindal 1.7% {5.2%} [7.2%]  
• Chris Christie 1.4% {2.0%} [0.8%] (4%) {5%} [9%] (5%)
• Rick Santorum 1.3% {0.6%} [2.9%] (6%) {2%} [6%]  
• George Pataki 0.3% {0.1%} [0.6%] 
• Unsure 17.9% {10.9%} {15%} {17%} [15%] (18%)

Survey of 454 Republican caucus participants was released October 1, 2015. The margin of error is +/- 4.6 percentage points. Results from the poll conducted August 29-31, 2015 are in curly brackets. Results from the poll conducted July 29, 2015 are in square brackets. Results from the poll conducted May 28-29, 2015 are in parentheses. Results from the poll conducted April 13, 2015 are in curly brackets. Results from the poll conducted February 12-13, 2015 are in square brackets. Results from the poll conducted January 5-7, 2015 are in parentheses.