Marist Institute for Public Opinion conducted a survey of 1129 Iowa adults between Aug 26 and Sep 2, 2015. Respondents were contacted by either Cellphone or Landline and instructed by a live operator. The results of this poll were released on Sep 6, 2015.
The poll was sponsored by NBC News.
Results were provided for each of the 2 publicly acknowledged questions along with the order in which they were presented.
Question 6 | PreferenceView Matchup
If the 2016 Democratic presidential caucus in Iowa were held today, whom would you support if the candidates are (including those who are undecided yet leaning toward a candidate):
This question was presented to 345 registered voters from Iowa who were contacted in some undisclosed fashion. The margin of sampling error is ± 5.3%.
The question wording was provided by Marist Institute for Public Opinion and NBC News.
Question 13 | PreferenceView Matchup
If the 2016 presidential election were held today, whom would you support if the candidates are:
| Trump (R) | Clinton (D) | Undecided | Total |
|---|
| All | 48% | 43% | 9% | 998
Registered |
| Female | 38% | 53% | 9% | 52% |
| Male | 60% | 31% | 10% | 48% |
| Democrat | 9% | 88% | 4% | 27% |
| Independent | 51% | 37% | 11% | 44% |
| Republican | 82% | 9% | 9% | 27% |
This question was presented to 998 registered voters from Iowa who were contacted in some undisclosed fashion. The margin of sampling error is ± 3.1%.
The question wording was provided by Marist Institute for Public Opinion and NBC News.