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2016 President · GA

Landmark Communications · fieldwork ended 2016-10-20 (19 days before the election) · 600 respondents · IVR/Live Phone

The poll said

Democrat 43% · Republican 47%

R+4.0

The certified result

Democrat 45.64% · Republican 50.77%

R+5.1

The arithmetic

  1. Poll margin = 43 − 47 = -4.00
  2. Actual margin = 45.640 − 50.771 = -5.131
  3. Signed miss = -4.00 − (-5.131) = 1.131
  4. Absolute miss = |1.131| = 1.131

The poll overstated the Democrat by 1.1 points and had the right leader.

Where these numbers come from

Poll and result: 538 raw_polls.csv. Poll ID 47169, race ID 612 (538 database).