2014 House · NY-24
Global Strategy Group · fieldwork ended 2014-10-21 (14 days before the election) · 400 respondents · Live Phone · partisan sponsor (DEM)
The poll said
Democrat 45% · Republican 40%
D+5.0
The certified result
Democrat 35.70% · Republican 46.15%
R+10.4
The arithmetic
- Poll margin = 45 − 40 = 5.00
- Actual margin = 35.705 − 46.152 = -10.447
- Signed miss = 5.00 − (-10.447) = 15.447
- Absolute miss = |15.447| = 15.447
The poll overstated the Democrat by 15.4 points and had the wrong leader.
Where these numbers come from
Poll and result: 538 raw_polls.csv. Poll ID 35915, race ID 5614 (538 database).