2016 President · CA
YouGov · fieldwork ended 2016-10-20 (19 days before the election) · 8,746 respondents · Online Panel
The poll said
Democrat 51.8% · Republican 30.4%
D+21.4
The certified result
Democrat 61.73% · Republican 31.62%
D+30.1
The arithmetic
- Poll margin = 51.8 − 30.4 = 21.40
- Actual margin = 61.726 − 31.617 = 30.109
- Signed miss = 21.40 − (30.109) = -8.709
- Absolute miss = |-8.709| = 8.709
The poll overstated the Republican by 8.7 points and had the right leader.
Where these numbers come from
Poll and result: 538 raw_polls.csv. Poll ID 48723, race ID 606 (538 database).