Gravis Marketing conducted a survey of 939 Iowa registered voters which ended on Oct 26, 2015. Respondents were contacted by Landline and the interaction was automated. The results of this poll were released on Oct 31, 2015.
The poll was sponsored by One America News Network.
Results were provided for the only publicly acknowledged question.
Question 4 | PreferenceView Matchup
Assuming you had to vote today, which 2016 Democrat Candidate would you vote for?
This question was presented to 273 registered voters from Iowa who were contacted in some undisclosed fashion. The margin of sampling error is ± 6%.
The question wording was provided by Gravis Marketing and One America News Network.