2014 House · NY-24
Siena College · fieldwork ended 2014-10-23 (12 days before the election) · 704 respondents · Live Phone
The poll said
Democrat 42% · Republican 52%
R+10.0
The certified result
Democrat 35.70% · Republican 46.15%
R+10.4
The arithmetic
- Poll margin = 42 − 52 = -10.00
- Actual margin = 35.705 − 46.152 = -10.447
- Signed miss = -10.00 − (-10.447) = 0.447
- Absolute miss = |0.447| = 0.447
The poll overstated the Democrat by 0.4 points and had the right leader.
Where these numbers come from
Poll and result: 538 raw_polls.csv. Poll ID 35908, race ID 5614 (538 database).