2016 President · DC
SurveyMonkey · fieldwork ended 2016-11-04 (4 days before the election) · 310 respondents · Online Panel
The poll said
Democrat 85% · Republican 7%
D+78.0
The certified result
Democrat 90.86% · Republican 4.09%
D+86.8
The arithmetic
- Poll margin = 85 − 7 = 78.00
- Actual margin = 90.864 − 4.087 = 86.777
- Signed miss = 78.00 − (86.777) = -8.776
- Absolute miss = |-8.776| = 8.776
The poll overstated the Republican by 8.8 points and had the right leader.
Where these numbers come from
Poll and result: 538 raw_polls.csv. Poll ID 48867, race ID 609 (538 database).