2014 House · GA-10
Landmark Communications · fieldwork ended 2014-10-30 (5 days before the election) · 500 respondents · IVR
The poll said
Democrat 32.2% · Republican 60.6%
R+28.4
The certified result
Democrat 33.48% · Republican 66.52%
R+33.0
The arithmetic
- Poll margin = 32.2 − 60.6 = -28.40
- Actual margin = 33.478 − 66.522 = -33.044
- Signed miss = -28.40 − (-33.044) = 4.645
- Absolute miss = |4.645| = 4.645
The poll overstated the Democrat by 4.6 points and had the right leader.
Where these numbers come from
Poll and result: 538 raw_polls.csv. Poll ID 35979, race ID 5455 (538 database).