2013 Governor · NJ
Monmouth University Polling Institute · fieldwork ended 2013-11-01 (4 days before the election) · 1,436 respondents · Live Phone
The poll said
Democrat 37% · Republican 57%
R+20.0
The certified result
Democrat 38.19% · Republican 60.30%
R+22.1
The arithmetic
- Poll margin = 37 − 57 = -20.00
- Actual margin = 38.191 − 60.302 = -22.111
- Signed miss = -20.00 − (-22.111) = 2.111
- Absolute miss = |2.111| = 2.111
The poll overstated the Democrat by 2.1 points and had the right leader.
Where these numbers come from
Poll and result: 538 raw_polls.csv. Poll ID 63954, race ID 1256 (538 database).