2010 Governor · TX
ccAdvertising · fieldwork ended 2010-10-12 (21 days before the election) · 1,510 respondents · IVR
The poll said
Democrat 35.5% · Republican 49.8%
R+14.3
The certified result
Democrat 42.30% · Republican 54.97%
R+12.7
The arithmetic
- Poll margin = 35.5 − 49.8 = -14.30
- Actual margin = 42.298 − 54.971 = -12.673
- Signed miss = -14.30 − (-12.673) = -1.627
- Absolute miss = |-1.627| = 1.627
The poll overstated the Republican by 1.6 points and had the right leader.
Where these numbers come from
Poll and result: 538 raw_polls.csv. Poll ID 63917, race ID 1306 (538 database).