Suffolk University conducted a survey of 500 Iowa likely voters between Aug 8 and Aug 10, 2016. Respondents were contacted by either Cellphone or Landline and instructed by a live operator. The results of this poll were released on Aug 11, 2016.
Results were provided for each of the 2 publicly acknowledged questions along with the order in which they were presented.
Question 20 | PreferenceView Matchup
Iowa’s presidential ballot may include Libertarian Gary Johnson and Green Party candidate Jill Stein. If the general election was held today and the candidates were (ROTATE) Democrat Hillary Clinton, Republican Donald Trump, (ROTATE) Green Party Jill Stein, or Libertarian Gary Johnson, for whom will you vote or lean?
| Trump (R) | Clinton (D) | Undecided | Johnson (L) | Stein (G) | Refused | Total |
|---|
| All | 37%
185 | 35.8%
179 | 17.4%
87 | 5.8%
29 | 2.8%
14 | 1.2%
6 | 500
Likely |
| Female | 33.83%
90 | 45.11%
120 | 13.16%
35 | 5.26%
14 | 1.88%
5 | 0.75%
2 | 53.2%
266 |
| Male | 40.6%
95 | 25.21%
59 | 22.22%
52 | 6.41%
15 | 3.85%
9 | 1.71%
4 | 46.8%
234 |
| Democrat | 5.03%
8 | 74.84%
119 | 10.06%
16 | 3.14%
5 | 6.29%
10 | 0.63%
1 | 31.8%
159 |
| Independent | 31.79%
55 | 23.7%
41 | 32.95%
57 | 7.51%
13 | 2.31%
4 | 1.73%
3 | 34.6%
173 |
| Republican | 73.49%
122 | 10.84%
18 | 7.83%
13 | 6.63%
11 | 0 | 1.2%
2 | 33.2%
166 |
This question was presented to 500 likely voters from Iowa who were contacted in some undisclosed fashion. The margin of sampling error is ± 4.4%.
The question wording was provided by Suffolk University.
Question 32 | PreferenceView Matchup
This November, the candidates for U.S. Senate will be (ROTATE) Republican Chuck Grassley and Democrat Patty Judge. At this point, who will you vote for or lean toward?
| Grassley (R) | Judge (D) | Undecided | Refused | Total |
|---|
| All | 51.8%
259 | 42.2%
211 | 5.6%
28 | 0.4%
2 | 500
Likely |
| Female | 46.62%
124 | 46.24%
123 | 6.77%
18 | 0.38%
1 | 53.2%
266 |
| Male | 57.69%
135 | 37.61%
88 | 4.27%
10 | 0.43%
1 | 46.8%
234 |
| Democrat | 12.58%
20 | 78.62%
125 | 8.81%
14 | 0 | 31.8%
159 |
| Independent | 53.18%
92 | 41.04%
71 | 4.62%
8 | 1.16%
2 | 34.6%
173 |
| Republican | 87.95%
146 | 8.43%
14 | 3.61%
6 | 0 | 33.2%
166 |
This question was presented to 500 likely voters from Iowa who were contacted in some undisclosed fashion. The margin of sampling error is ± 4.4%.
The question wording was provided by Suffolk University.