2016 President · WI
SurveyMonkey · fieldwork ended 2016-11-04 (4 days before the election) · 2,246 respondents · Online Panel
The poll said
Democrat 44% · Republican 42%
D+2.0
The certified result
Democrat 46.45% · Republican 47.22%
R+0.8
The arithmetic
- Poll margin = 44 − 42 = 2.00
- Actual margin = 46.454 − 47.218 = -0.764
- Signed miss = 2.00 − (-0.764) = 2.764
- Absolute miss = |2.764| = 2.764
The poll overstated the Democrat by 2.8 points and had the wrong leader.
Where these numbers come from
Poll and result: 538 raw_polls.csv. Poll ID 48909, race ID 650 (538 database).