Poll Chart

2016 Iowa Senate: Grassley vs. Judge

Currently tracking 15 polls from 9 pollsters
Updated about 13 hours ago
Election on November 8, 2016

This chart combines the latest opinion polls into trendlines using a poll-tracking model and is updated whenever a new poll is released.

HuffPost Model

Our model of the polls suggests Grassley is very likely leading. (In >99% of simulations, Grassley led Judge.)

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Latest Polls

Poll
Grassley
Judge
Other
Undecided
Spread
Sep 20 – Sep 22
491 Likely Voters
54 37 1 9 Grassley +17
Sep 13 – Sep 21
612 Likely Voters
55 43 0 2 Grassley +12
Sep 12 – Sep 14
404 Likely Voters
56 39 2 3 Grassley +17
Sep 6 – Sep 8
1,054 Likely Voters
50 37 13 Grassley +13
Aug 30 – Aug 31
827 Likely Voters
49 43 8 Grassley +6
Aug 17 – Aug 19
987 Likely Voters
45 38 1 15 Grassley +7
Aug 9 – Aug 16
846 Likely Voters
51 42 0 6 Grassley +9
Aug 8 – Aug 10
500 Likely Voters
52 42 6 Grassley +10
Aug 3 – Aug 7
899 Registered Voters
52 42 1 5 Grassley +10
Jul 13 – Jul 15
998 Likely Voters
45 37 2 16 Grassley +8
Jul 8 – Jul 11
401 Likely Voters
52 42 6 Grassley +10
Jul 5 – Jul 10
822 Registered Voters
52 42 1 5 Grassley +10
Jun 24 – Jun 28
600 Likely Voters
46 45 10 Grassley +1
Jun 22 – Jun 23
897 Likely Voters
46 39 14 Grassley +7
Jun 9 – Jun 13
630 Likely Voters
48 41 11 Grassley +7

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