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

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

• Hillary Clinton 57% [49%] (39.5%) {45.1%} [50.8%] (59%)
• Bernie Sanders 36% [31%] (30.6%) {16.9%} [24.0%] (15%)
• Martin O'Malley 7% [10%] (1.5%) {4.9%} [4.7%] (3%)  

Survey of 461 likely Democratic caucus participants was conducted January 11-12, 2016. The margin of error is +/- 5 percentage points. Results from the poll released December 18-21, 2015 are in square brackets. Results from the poll released October 1, 2015 are in parentheses. 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.