2014 Senate · DE
YouGov · fieldwork ended 2014-10-20 (15 days before the election) · 461 respondents · Online Panel
The poll said
Democrat 54% · Republican 36%
D+18.0
The certified result
Democrat 55.83% · Republican 42.23%
D+13.6
The arithmetic
- Poll margin = 54 − 36 = 18.00
- Actual margin = 55.826 − 42.225 = 13.601
- Signed miss = 18.00 − (13.601) = 4.399
- Absolute miss = |4.399| = 4.399
The poll overstated the Democrat by 4.4 points and had the right leader.
Where these numbers come from
Poll and result: 538 raw_polls.csv. Poll ID 33823, race ID 24 (538 database).