2012 President · CT
Public Policy Polling · fieldwork ended 2012-11-01 (5 days before the election) · 1,220 respondents · IVR
The poll said
Democrat 55% · Republican 42%
D+13.0
The certified result
Democrat 58.06% · Republican 40.73%
D+17.3
The arithmetic
- Poll margin = 55 − 42 = 13.00
- Actual margin = 58.057 − 40.725 = 17.332
- Signed miss = 13.00 − (17.332) = -4.331
- Absolute miss = |-4.331| = 4.331
The poll overstated the Republican by 4.3 points and had the right leader.
Where these numbers come from
Poll and result: 538 raw_polls.csv. Poll ID 30623, race ID 659 (538 database).