2016 President · OK
YouGov · fieldwork ended 2016-10-20 (19 days before the election) · 949 respondents · Online Panel
The poll said
Democrat 26.8% · Republican 53.4%
R+26.6
The certified result
Democrat 28.93% · Republican 65.32%
R+36.4
The arithmetic
- Poll margin = 26.8 − 53.4 = -26.60
- Actual margin = 28.932 − 65.323 = -36.391
- Signed miss = -26.60 − (-36.391) = 9.791
- Absolute miss = |9.791| = 9.791
The poll overstated the Democrat by 9.8 points and had the right leader.
Where these numbers come from
Poll and result: 538 raw_polls.csv. Poll ID 48755, race ID 638 (538 database).