2016 President · MT
YouGov · fieldwork ended 2016-10-20 (19 days before the election) · 307 respondents · Online Panel
The poll said
Democrat 31.7% · Republican 44.1%
R+12.4
The certified result
Democrat 35.75% · Republican 56.17%
R+20.4
The arithmetic
- Poll margin = 31.7 − 44.1 = -12.40
- Actual margin = 35.746 − 56.168 = -20.422
- Signed miss = -12.40 − (-20.422) = 8.023
- Absolute miss = |8.023| = 8.023
The poll overstated the Democrat by 8.0 points and had the right leader.
Where these numbers come from
Poll and result: 538 raw_polls.csv. Poll ID 48745, race ID 628 (538 database).