PredictionsEndorse2020 Senatorial Election Polls - IA ResultsPolls
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Iowa Polls (Aggregate = Slight Greenfield for 3-poll average)National Summary
Candidate Party Avg. #Wins Poll Graph
Theresa Greenfield Democratic 49% 3pie
Joni Ernst* Republican 46% 0
Other - 2% 0
-Undecided- 2% 0

 Three-Poll Rolling Average
 Rolling Average Poll Graph

DatePoll Source Spread Rep Dem IndUnd M.O.E. Sample#C
2020-11-02Public Policy PollingD +147%48%0%5%3%871 L16
2020-11-01CiviqsD +347%50%1%1%4%853 L6
2020-11-01Data 4 ProgressD +445%49%6%0%3%951 L18
2020-11-01 Change ResearchD +147%48%2%2%3%1,084 L2
2020-10-31Emerson CollegeD +444%48%2%6%4%604 L28
2020-10-29Selzer & CoR +446%42%0%12%3%814 L
2020-10-27Quinnipiac UniversityR +248%46%1%4%3%1,225 L72
2020-10-24RABA ResearchD +645%51%0%6%4%693 L21
2020-10-21Emerson CollegeR +146%45%3%6%5%435 L32
2020-10-20Siena Research InstituteR +145%44%5%7%4%753 L52
2020-10-19RMG ResearchD +343%46%3%7%4%800 L12
2020-10-19Monmouth UniversityD +247%49%0%4%4%501 L14
2020-10-19Insider AdvantageD +543%48%5%3%5%400 L22
2020-10-11Data 4 ProgressD +443%47%3%6%3%822 L25
2020-10-09YouGovD +443%47%2%8%4%1,035 L35
2020-10-08Other SourceR +247%45%0%5%4%800 L3
2020-10-06CiviqsD +346%49%3%3%4%756 L22
2020-10-05Quinnipiac UniversityD +545%50%1%4%3%1,205 L17
2020-09-26RABA ResearchD +1239%51%0%10%4%780 L45
2020-09-22Monmouth UniversityTie47%47%1%4%5%402 L8
2020-08-17Selzer & CoD +342%45%3%7%4%658 L43
2020-08-14Public Policy PollingD +345%48%0%8%4%729 R19
2020-08-03Monmouth UniversityR +348%45%3%3%5%401 L28
2020-08-02Data 4 ProgressR +242%40%0%19%3%1,101 L18
2020-07-30Other SourceD +436%40%0%24%5%500 R11
2020-07-28Other SourceD +247%49%0%3%3%800 L43
2020-06-11Selzer & CoD +343%46%4%7%4%674 L67
2020-06-08CiviqsD +345%48%3%3%4%865 R28
2020-06-04Public Policy PollingD +243%45%0%12%4%963 L26
2020-05-09RABA ResearchTie42%42%0%16%4%632 L9
2020-05-01Public Policy PollingR +143%42%0%14%4%1,222 L34
2019-12-15Public Policy PollingR +647%41%0%12%3%944 R
2019-10-16Emerson CollegeR +747%40%0%13%3%888 L21
2019-04-19Public Policy PollingR +448%44%0%8%4%780 R


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