2010 Governor · RI
Scott Rasmussen (Rasmussen Reports) · fieldwork ended 2010-10-21 (12 days before the election) · 750 respondents · IVR
The poll said
Democrat 28% · Republican 25%
D+3.0
The certified result
Democrat 23.05% · Republican 33.57%
R+10.5
The arithmetic
- Poll margin = 28 − 25 = 3.00
- Actual margin = 23.049 − 33.571 = -10.522
- Signed miss = 3.00 − (-10.522) = 13.522
- Absolute miss = |13.522| = 13.522
The poll overstated the Democrat by 13.5 points and had the wrong leader.
Where these numbers come from
Poll and result: 538 raw_polls.csv. Poll ID 53250, race ID 1302 (538 database).