PredictionsEndorse2016 Senatorial Election Polls - IA ResultsPolls
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Iowa Polls (Aggregate = Strong Grassley for 3-poll average)National Summary
Candidate Party Avg. #Wins Poll Graph
Charles E. Grassley* Republican 56% 3pie
Patty Judge Democratic 34% 0
Other - 2% 0
-Undecided- 8% 0

 Three-Poll Rolling Average
 Rolling Average Poll Graph

DatePoll Source Spread Rep Dem IndUnd M.O.E. Sample#C
2016-11-04Selzer & CoR +2356%33%0%11%4%800 L2
2016-11-03Loras CollegeR +1653%37%1%8%4%500 L3
2016-11-03Emerson CollegeR +2860%32%4%5%4%700 L1
2016-10-31Other SourceR +1556%41%0%3%3%984 L41
2016-10-26Quinnipiac UniversityR +1856%38%0%6%4%791 L7
2016-09-22Loras CollegeR +1754%37%0%9%4%491 L1
2016-09-21Quinnipiac UniversityR +1255%43%0%2%4%612 L3
2016-09-14Monmouth UniversityR +1756%39%0%5%5%404 L12
2016-09-08RABA ResearchR +1350%37%0%13%3%1,054 L8
2016-09-01Emerson CollegeR +1151%40%0%9%4%600 L9
2016-08-31Public Policy PollingR +649%43%0%8%3%827 L9
2016-08-19YouGovR +745%38%0%15%4%987 L16
2016-08-16Quinnipiac UniversityR +951%42%0%7%3%846 L6
2016-08-10Suffolk UniversityR +1052%42%0%6%4%500 L3
2016-08-07Marist CollegeR +1052%42%0%6%3%899 R18
2016-07-15YouGovR +845%37%0%18%5%998 L1
2016-07-13Marist CollegeR +1052%42%0%6%3%822 R0
2016-07-11Monmouth UniversityR +1052%42%0%6%5%401 L7
2016-06-28Loras CollegeR +146%45%0%9%4%600 L
2016-06-10Public Policy PollingR +748%41%0%11%4%630 L27
2016-01-10Public Policy PollingR +2452%28%0%20%2%1,901 R2
2015-12-13Public Policy PollingR +2554%29%0%27%3%1,426 R
2015-11-01Public Policy PollingR +2453%29%0%18%2%1,668 R10
2015-09-20Public Policy PollingR +2856%28%0%16%3%1,374 L5
2015-08-09Public Policy PollingR +2352%29%0%19%3%1,500 R
2015-01-01Public Policy PollingR +951%42%0%7%3%1,192 L

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