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2016 Governor · NC

Public Policy Polling · fieldwork ended 2016-10-21 (18 days before the election) · 875 respondents · IVR/Online Panel

The poll said

Democrat 46% · Republican 44%

D+2.0

The certified result

Democrat 49.02% · Republican 48.80%

D+0.2

The arithmetic

  1. Poll margin = 46 − 44 = 2.00
  2. Actual margin = 49.016 − 48.798 = 0.218
  3. Signed miss = 2.00 − (0.218) = 1.782
  4. Absolute miss = |1.782| = 1.782

The poll overstated the Democrat by 1.8 points and had the right leader.

Where these numbers come from

Poll and result: 538 raw_polls.csv. Poll ID 47248, race ID 52 (538 database).