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 30.9%
• Scott Walker 15.4% (17%) {13%} [24%] (10%)  
• Jeb Bush 10.0% (10%) {16%} [10%] (14%)
• Bobby Jindal 7.2%
• Ben Carson 5.1% (12%) {9%} [5%]
• John Kasich 5.0%
• Mike Huckabee 6.0% (8%) {8%} [7%] (9%)
• Ted Cruz 5.5% (6%) {6%} [4%] (7%)
• Carly Fiorina 4.3% (5%) {3%} [3%]
• Rick Santorum 2.9% (6%) {2%} [6%]
• Marco Rubio 2.8% (13%) {12%} [7%] (4%)
• Rick Perry 1.7% 
• Lindsey Graham 1.0%
• Chris Christie 0.8% (4%) {5%} [9%] (5%)  
• Rand Paul 0.8% (4%) {9%} [10%] (8%) 
• George Pataki 0.6%

Survey of 277 Republican caucus participants was conducted July 29, 2015. The margin of error is +/- 6.5 percentage points. 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.