Polls analyzed | 3 |
Races called correctly | 67% |
Most recent cycle | 2016 |
Affiliated with professional polling organization (NCPP/AAPOR/Roper) | No |
How accurate are the polls from Iowa State University?
2016
Key
A = Adults
RV = Registered voters
V = Voters
LV = Likely voters
Dates | Sample | Race | Methodology | Poll margin | Election margin | Difference |
---|---|---|---|---|---|---|
Jan 5-22 | 283LV | President (IA) Republican primary | Live Phone | Poll Cruz (R) +6.9 | Actual Cruz (R) +3.3 | Difference 3.6 |
Jan 5-22 | 356LV | President (IA) Democratic primary | Live Phone | Poll Clinton (D) +2.4 | Actual Clinton (D) +0.3 | Difference 2.1 |
2012
Dates | Sample | Race | Methodology | Poll margin | Election margin | Difference |
---|---|---|---|---|---|---|
Dec 8-18 | 333LV | President (IA) Republican primary | Live Phone | Poll Romney (R) +13.0 | Actual Santorum (R) +0.0 | Difference 13.0 |
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