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2002 Governor · MN

Zogby Analytics · fieldwork ended 2002-11-01 (4 days before the election) · 600 respondents · Live Phone

The poll said

Democrat 34% · Republican 35%

R+1.0

The certified result

Democrat 36.46% · Republican 44.37%

R+7.9

The arithmetic

  1. Poll margin = 34 − 35 = -1.00
  2. Actual margin = 36.461 − 44.372 = -7.911
  3. Signed miss = -1.00 − (-7.911) = 6.912
  4. Absolute miss = |6.912| = 6.912

The poll overstated the Democrat by 6.9 points and had the right leader.

Where these numbers come from

Poll and result: 538 raw_polls.csv. Poll ID 25675, race ID 1399 (538 database).