A/B
| Polls analyzed | 29 |
| Races called correctly | 90% |
| Most recent cycle | 2012 |
| Affiliated with professional polling organization (NCPP/AAPOR/Roper) | No |
How accurate are the polls from Grove Insight?
Polls conducted within 21 days of an election (based on the poll’s median date) are used to determine the pollster’s grade.
2012
Key
A = Adults
RV = Registered voters
V = Voters
LV = Likely voters
| Dates | Sample | Race | Methodology | Poll margin | Election margin | Difference |
|---|---|---|---|---|---|---|
| Nov 1-2 | 500LV | President (WI) General election | Live Phone | Poll Obama (D) +6.0 | Actual Obama (D) +6.8 | Difference 0.8 |
| Nov 1-2 | 500LV | President (OH) General election | Live Phone | Poll Obama (D) +4.0 | Actual Obama (D) +3.0 | Difference 1.0 |
| Nov 1-2 | 500LV | President (IA) General election | Live Phone | Poll Obama (D) +3.0 | Actual Obama (D) +5.8 | Difference 2.8 |
| Oct 31-Nov 1 | 500LV | President (MI) General election | Live Phone | Poll Obama (D) +7.0 | Actual Obama (D) +9.5 | Difference 2.5 |
| Oct 28-29 | 500LV | President (OH) General election | Live Phone | Poll Obama (D) +3.0 | Actual Obama (D) +3.0 | Difference 0.0 |
| Oct 28-29 | 600LV | President (FL) General election | Live Phone | Poll Obama (D) +1.0 | Actual Obama (D) +0.9 | Difference 0.1 |
| Oct 28-29 | 500LV | President (CO) General election | Live Phone | Poll Obama (D) +3.0 | Actual Obama (D) +5.4 | Difference 2.4 |
| Oct 27-28 | 500LV | Senate (NV) General election | Live Phone | Poll Heller (R) +1.0 | Actual Heller (R) +1.2 | Difference 0.2 |
| Oct 27-28 | 500LV | President (NV) General election | Live Phone | Poll Obama (D) +6.0 | Actual Obama (D) +6.7 | Difference 0.7 |
| Oct 24-25 | 500LV | President (WI) General election | Live Phone | Poll Obama (D) +5.0 | Actual Obama (D) +6.8 | Difference 1.8 |
| Oct 24-25 | 500LV | President (NH) General election | Live Phone | Poll Obama (D) +3.0 | Actual Obama (D) +5.6 | Difference 2.6 |
| Oct 23-24 | 500LV | President (NC) General election | Live Phone | Poll Obama (D) +3.0 | Actual Romney (R) +2.0 | Difference 5.0 |
| Oct 23-24 | 600LV | President (FL) General election | Live Phone | Poll Obama (D) +2.0 | Actual Obama (D) +0.9 | Difference 1.1 |
| Oct 23-24 | 500LV | President (CO) General election | Live Phone | Poll Obama (D) +3.0 | Actual Obama (D) +5.4 | Difference 2.4 |
| Oct 19-21 | 400LV | House (CA-52) General election | Live Phone | Poll Peters (D) +5.0 | Actual Peters (D) +2.4 | Difference 2.6 |
| Oct 17-18 | 500LV | President (WI) General election | Live Phone | Poll Obama (D) +3.0 | Actual Obama (D) +6.8 | Difference 3.8 |
| Oct 17-18 | 500LV | President (NC) General election | Live Phone | Poll Obama (D) +3.0 | Actual Romney (R) +2.0 | Difference 5.0 |
| Oct 17-18 | 500LV | President (FL) General election | Live Phone | Poll Obama (D) +3.0 | Actual Obama (D) +0.9 | Difference 2.1 |
| Oct 15-16 | 500LV | President (NV) General election | Live Phone | Poll Obama (D) +7.0 | Actual Obama (D) +6.7 | Difference 0.3 |
| Oct 15-16 | 500LV | President (CO) General election | Live Phone | Poll Obama (D) +3.0 | Actual Obama (D) +5.4 | Difference 2.4 |
2010
| Dates | Sample | Race | Methodology | Poll margin | Election margin | Difference |
|---|---|---|---|---|---|---|
| Oct 22-24 | 500LV | Governor (OR) General election | Live Phone | Poll Kitzhaber (D) +4.0 | Actual Kitzhaber (D) +1.5 | Difference 2.5 |
| Oct 18-19 | 400LV | House (MN-1) General election | Live Phone | Poll Walz (D) +16.0 | Actual Walz (D) +5.3 | Difference 10.7 |
| Oct 11-12 | 400LV | House (OR-4) General election | Live Phone | Poll DeFazio (D) +14.0 | Actual DeFazio (D) +10.9 | Difference 3.1 |
2008
| Dates | Sample | Race | Methodology | Poll margin | Election margin | Difference |
|---|---|---|---|---|---|---|
| Oct 23-24 | 600LV | President (AZ) General election | Live Phone | Poll McCain (R) +4.0 | Actual McCain (R) +8.5 | Difference 4.5 |
| Oct 21 | 400LV | House (MI-9) General election | Live Phone | Poll Peters (D) +10.0 | Actual Peters (D) +9.5 | Difference 0.5 |
| Oct 15-16 | 400LV | House (NJ-3) General election | Live Phone | Poll Adler (D) +8.0 | Actual Adler (D) +4.2 | Difference 3.8 |
2006
| Dates | Sample | Race | Methodology | Poll margin | Election margin | Difference |
|---|---|---|---|---|---|---|
| Oct 26 | 400V | House (OH-1) General election | Live Phone | Poll Cranley (D) +9.0 | Actual Chabot (R) +4.5 | Difference 13.5 |
| Oct 25 | 400LV | House (CT-2) General election | Live Phone | Poll Courtney (D) +4.0 | Actual Courtney (D) +0.0 | Difference 4.0 |
| Oct 24 | 400V | House (NY-20) General election | Live Phone | Poll Gillibrand (D) +3.0 | Actual Gillibrand (D) +6.2 | Difference 3.2 |
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