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2004 Senate · GA

Zogby Analytics · fieldwork ended 2004-10-28 (5 days before the election) · 501 respondents · Live Phone

The poll said

Democrat 36% · Republican 49%

R+13.0

The certified result

Democrat 39.98% · Republican 57.88%

R+17.9

The arithmetic

  1. Poll margin = 36 − 49 = -13.00
  2. Actual margin = 39.978 − 57.877 = -17.899
  3. Signed miss = -13.00 − (-17.899) = 4.899
  4. Absolute miss = |4.899| = 4.899

The poll overstated the Democrat by 4.9 points and had the right leader.

Where these numbers come from

Poll and result: 538 raw_polls.csv. Poll ID 4371, race ID 1622 (538 database).