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2002 Governor · CO

Zogby Analytics · fieldwork ended 2002-11-01 (4 days before the election) · 500 respondents · Live Phone

The poll said

Democrat 28% · Republican 60%

R+32.0

The certified result

Democrat 33.65% · Republican 62.62%

R+29.0

The arithmetic

  1. Poll margin = 28 − 60 = -32.00
  2. Actual margin = 33.652 − 62.621 = -28.969
  3. Signed miss = -32.00 − (-28.969) = -3.031
  4. Absolute miss = |-3.031| = 3.031

The poll overstated the Republican by 3.0 points and had the right leader.

Where these numbers come from

Poll and result: 538 raw_polls.csv. Poll ID 25666, race ID 1386 (538 database).