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Iowa US Senate

Incumbent: Chuck Grassley (R) | 2 candidates | Election on November 8, 201620 polls

SampleGrassley (R)Judge (D)
IA: Emerson College
Nov 1-3, 2016
224 of 700
Likely | 32%
57.14%
128
33.04%
74
IA: Loras College
Nov 1-3, 2016
164 of 500
Likely | 32.8%
51.22%
84
39.02%
64
IA: Quinnipiac University
Oct 20-26, 2016
292.67 of 791
Likely | 37%
60%34%
IA: Quinnipiac University
Sep 13-21, 2016
201.96 of 612
Likely | 33%
53%42%
IA: Monmouth University Polling Institute
Sep 12-14, 2016
189.88 of 404
Likely | 47%
58%35%
IA: RABA Research, Simpson College
Sep 6-8, 2016
389.98 of 1054
Registered | 37%
49%33%
IA: Emerson College
8/31-9/1/2016
203 of 600
Likely | 33.83%
47.78%
97
40.89%
83
IA: YouGov, CBS News
Aug 17-19, 2016
272 of 987
Likely | 27.56%
43%34%
IA: Quinnipiac University
Aug 9-16, 2016
329.94 of 846
Likely | 39%
57%37%
IA: Suffolk University
Aug 8-10, 2016
173 of 500
Likely | 34.6%
53.18%
92
41.04%
71
IA: Marist Institute for Public Opinion, NBC News, Wall Street Journal
Aug 3-7, 2016
404.55 of 899
Registered | 45%
54%37%
IA: YouGov, CBS News
Jul 13-15, 2016
299 of 998
Likely | 29.96%
46%27%
IA: Marist Institute for Public Opinion, NBC News, Wall Street Journal
Jul 5-10, 2016
304.14 of 822
Registered | 37%
48%40%
IA: Loras College
Jun 24-28, 2016
179 of 600
Likely | 29.83%
41.9%
75
48.04%
86
IA: Public Policy Polling, Americans United For Change
Jun 22-23, 2016
251.16 of 897
Registered | 28%
44%31%
IA: Public Policy Polling
Jun 9-10, 2016
176.4 of 630
Registered | 28%
40%40%

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