2016 President · AL
YouGov · fieldwork ended 2016-10-20 (19 days before the election) · 1,388 respondents · Online Panel
The poll said
Democrat 31.6% · Republican 52.6%
R+21.0
The certified result
Democrat 34.36% · Republican 62.08%
R+27.7
The arithmetic
- Poll margin = 31.6 − 52.6 = -21.00
- Actual margin = 34.358 − 62.083 = -27.725
- Signed miss = -21.00 − (-27.725) = 6.725
- Absolute miss = |6.725| = 6.725
The poll overstated the Democrat by 6.7 points and had the right leader.
Where these numbers come from
Poll and result: 538 raw_polls.csv. Poll ID 48719, race ID 603 (538 database).