2000 House · OH-12
SurveyUSA · fieldwork ended 2000-10-22 (16 days before the election) · 500 respondents · IVR
The poll said
Democrat 41% · Republican 56%
R+15.0
The certified result
Democrat 43.83% · Republican 52.87%
R+9.0
The arithmetic
- Poll margin = 41 − 56 = -15.00
- Actual margin = 43.826 − 52.866 = -9.040
- Signed miss = -15.00 − (-9.040) = -5.960
- Absolute miss = |-5.960| = 5.960
The poll overstated the Republican by 6.0 points and had the right leader.
Where these numbers come from
Poll and result: 538 raw_polls.csv. Poll ID 64266, race ID 2592 (538 database).