Poll Watch: Gravis Marketing (R) Iowa 2016 Republican Caucus Survey

Gravis Marketing (R) Iowa 2016 GOP Caucus Poll

• Donald Trump 31.7% [30.9%]
• Ben Carson 15.8% [5.1%] (12%) {9%} [5%]
• Ted Cruz 6.9% [5.5%] (6%) {6%} [4%] (7%)
• Marco Rubio 5.8% [2.8%] (13%) {12%} [7%] (4%)
• Scott Walker 5.6% [15.4%] (17%) {13%} [24%] (10%)  
• Bobby Jindal 5.2% [7.2%]
• Carly Fiorina 4.6% [4.3%] (5%) {3%} [3%]
• Jeb Bush 4.1% [10.0%] (10%) {16%} [10%] (14%)
• Mike Huckabee 2.6% [6.0%] (8%) {8%} [7%] (9%)
• Chris Christie 2.0% [0.8%] (4%) {5%} [9%] (5%)
• John Kasich 1.4% [5.0%]
• Rand Paul 1.3% [0.8%] (4%) {9%} [10%] (8%)
• Rick Perry 0.9% [1.7%]
• Rick Santorum 0.6% [2.9%] (6%) {2%} [6%]
• Lindsey Graham 0.4% [1.0%]  
• George Pataki 0.1% [0.6%]

Survey of 507 Republican caucus participants was conducted August 29-31, 2015. The margin of error is +/- 4.4 percentage points. 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.