2004 President · national
Gallup · fieldwork ended 2004-10-15 (18 days before the election) · 709 respondents · Live Phone
The poll said
Democrat 44% · Republican 52%
R+8.0
The certified result
Democrat 48.13% · Republican 50.57%
R+2.4
The arithmetic
- Poll margin = 44 − 52 = -8.00
- Actual margin = 48.130 − 50.573 = -2.443
- Signed miss = -8.00 − (-2.443) = -5.556
- Absolute miss = |-5.556| = 5.556
The poll overstated the Republican by 5.6 points and had the right leader.
Where these numbers come from
Poll and result: 538 raw_polls.csv. Poll ID 14995, race ID 39 (538 database).