2000 House · FL-22
SurveyUSA · fieldwork ended 2000-10-31 (7 days before the election) · 500 respondents · IVR
The poll said
Democrat 52% · Republican 45%
D+7.0
The certified result
Democrat 49.86% · Republican 50.14%
R+0.3
The arithmetic
- Poll margin = 52 − 45 = 7.00
- Actual margin = 49.858 − 50.142 = -0.284
- Signed miss = 7.00 − (-0.284) = 7.284
- Absolute miss = |7.284| = 7.284
The poll overstated the Democrat by 7.3 points and had the wrong leader.
Where these numbers come from
Poll and result: 538 raw_polls.csv. Poll ID 64272, race ID 2386 (538 database).