A/B
| Polls analyzed | 22 |
| Races called correctly | 93% |
| Most recent cycle | 2016 |
| Affiliated with professional polling organization (NCPP/AAPOR/Roper) | Yes |
How accurate are the polls from Columbus Dispatch?
Polls conducted within 21 days of an election (based on the poll’s median date) are used to determine the pollster’s grade.
2016
Key
A = Adults
RV = Registered voters
V = Voters
LV = Likely voters
| Dates | Sample | Race | Methodology | Poll margin | Election margin | Difference |
|---|---|---|---|---|---|---|
| Oct 27-Nov 5 | 1,151LV | President (OH) General election | Poll Clinton (D) +1.0 | Actual Trump (R) +8.1 | Difference 9.1 | |
| Oct 27-Nov 5 | 1,151LV | Senate (OH) General election | Poll Portman (R) +21.0 | Actual Portman (R) +20.9 | Difference 0.1 |
2014
| Dates | Sample | Race | Methodology | Poll margin | Election margin | Difference |
|---|---|---|---|---|---|---|
| Oct 22-31 | 1,009LV | Governor (OH) General election | Poll Kasich (R) +28.0 | Actual Kasich (R) +30.6 | Difference 2.6 |
2012
| Dates | Sample | Race | Methodology | Poll margin | Election margin | Difference |
|---|---|---|---|---|---|---|
| Oct 24-Nov 2 | 1,501LV | Senate (OH) General election | Poll Brown (D) +6.0 | Actual Brown (D) +6.0 | Difference 0.0 | |
| Oct 24-Nov 2 | 1,501LV | President (OH) General election | Poll Obama (D) +2.0 | Actual Obama (D) +3.0 | Difference 1.0 |
2010
| Dates | Sample | Race | Methodology | Poll margin | Election margin | Difference |
|---|---|---|---|---|---|---|
| Oct 20-29 | 1,445LV | Senate (OH) General election | Poll Portman (R) +16.0 | Actual Portman (R) +17.4 | Difference 1.4 | |
| Oct 20-29 | 1,445LV | Governor (OH) General election | Poll Kasich (R) +2.0 | Actual Kasich (R) +2.0 | Difference 0.0 |
2008
| Dates | Sample | Race | Methodology | Poll margin | Election margin | Difference |
|---|---|---|---|---|---|---|
| Oct 22-31 | 2,164LV | President (OH) General election | Poll Obama (D) +6.0 | Actual Obama (D) +4.6 | Difference 1.4 | |
| Feb 21-29 | 2,082RV | President (OH) Republican primary | Poll McCain (R) +40.0 | Actual McCain (R) +22.2 | Difference 17.8 | |
| Feb 21-29 | 2,308RV | President (OH) Democratic primary | Poll Clinton (D) +16.0 | Actual Clinton (D) +8.7 | Difference 7.3 |
2006
| Dates | Sample | Race | Methodology | Poll margin | Election margin | Difference |
|---|---|---|---|---|---|---|
| Oct 24-Nov 3 | 1,541RV | Governor (OH) General election | Poll Strickland (D) +36.0 | Actual Strickland (D) +23.9 | Difference 12.1 | |
| Oct 24-Nov 3 | 1,541RV | Senate (OH) General election | Poll Brown (D) +24.0 | Actual Brown (D) +12.3 | Difference 11.7 |
2004
| Dates | Sample | Race | Methodology | Poll margin | Election margin | Difference |
|---|---|---|---|---|---|---|
| Oct 20-29 | 2,880LV | Senate (OH) General election | Poll Voinovich (R) +24.0 | Actual Voinovich (R) +27.7 | Difference 3.7 | |
| Oct 20-29 | 2,880LV | President (OH) General election | Poll Even | Actual Bush (R) +2.1 | Difference 2.1 | |
| Feb 19-27 | 3,793RV | President (OH) Democratic primary | Poll Kerry (D) +31.0 | Actual Kerry (D) +17.7 | Difference 13.3 |
2002
| Dates | Sample | Race | Methodology | Poll margin | Election margin | Difference |
|---|---|---|---|---|---|---|
| Oct 24-31 | 2,048LV | Governor (OH) General election | Poll Taft (R) +18.0 | Actual Taft (R) +19.5 | Difference 1.5 |
2000
| Dates | Sample | Race | Methodology | Poll margin | Election margin | Difference |
|---|---|---|---|---|---|---|
| Oct 27-Nov 3 | 2,050LV | President (OH) General election | Poll Bush (R) +10.0 | Actual Bush (R) +3.5 | Difference 6.5 | |
| Oct 27-Nov 3 | 2,050LV | Senate (OH) General election | Poll DeWine (R) +27.0 | Actual DeWine (R) +24.1 | Difference 2.9 | |
| Feb 25-Mar 4 | 3,714RV | President (OH) Republican primary | Poll Bush (R) +28.0 | Actual Bush (R) +21.0 | Difference 7.0 | |
| Feb 25-Mar 4 | 2,892RV | President (OH) Democratic primary | Poll Gore (D) +47.0 | Actual Gore (D) +48.9 | Difference 1.9 |
1998
| Dates | Sample | Race | Methodology | Poll margin | Election margin | Difference |
|---|---|---|---|---|---|---|
| Oct 27 | 800LV | Senate (OH) General election | Poll Voinovich (R) +2.0 | Actual Voinovich (R) +12.9 | Difference 10.9 | |
| Oct 27 | 800LV | Governor (OH) General election | Poll Taft (R) +1.0 | Actual Taft (R) +5.4 | Difference 4.4 |
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