2000 President · MI
SurveyUSA · fieldwork ended 2000-10-21 (17 days before the election) · 600 respondents · IVR
The poll said
Democrat 47% · Republican 46%
D+1.0
The certified result
Democrat 51.28% · Republican 46.15%
D+5.1
The arithmetic
- Poll margin = 47 − 46 = 1.00
- Actual margin = 51.280 − 46.146 = 5.134
- Signed miss = 1.00 − (5.134) = -4.134
- Absolute miss = |-4.134| = 4.134
The poll overstated the Republican by 4.1 points and had the right leader.
Where these numbers come from
Poll and result: 538 raw_polls.csv. Poll ID 75506, race ID 828 (538 database).