2008 President · DE
YouGov · fieldwork ended 2008-10-25 (10 days before the election) · 346 respondents · Online Panel
The poll said
Democrat 59% · Republican 37%
D+22.0
The certified result
Democrat 61.94% · Republican 36.95%
D+25.0
The arithmetic
- Poll margin = 59 − 37 = 22.00
- Actual margin = 61.943 − 36.947 = 24.996
- Signed miss = 22.00 − (24.996) = -2.996
- Absolute miss = |-2.996| = 2.996
The poll overstated the Republican by 3.0 points and had the right leader.
Where these numbers come from
Poll and result: 538 raw_polls.csv. Poll ID 16466, race ID 712 (538 database).