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2016 President · NH

SurveyMonkey · fieldwork ended 2016-10-28 (11 days before the election) · 659 respondents · Online Panel

The poll said

Democrat 48% · Republican 35%

D+13.0

The certified result

Democrat 46.83% · Republican 46.46%

D+0.4

The arithmetic

  1. Poll margin = 48 − 35 = 13.00
  2. Actual margin = 46.826 − 46.459 = 0.367
  3. Signed miss = 13.00 − (0.367) = 12.632
  4. Absolute miss = |12.632| = 12.632

The poll overstated the Democrat by 12.6 points and had the right leader.

Where these numbers come from

Poll and result: 538 raw_polls.csv. Poll ID 47912, race ID 632 (538 database).