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2016 Senate · NV

SurveyMonkey · fieldwork ended 2016-11-04 (4 days before the election) · 1,207 respondents · Online Panel

The poll said

Democrat 50% · Republican 45%

D+5.0

The certified result

Democrat 47.10% · Republican 44.67%

D+2.4

The arithmetic

  1. Poll margin = 50 − 45 = 5.00
  2. Actual margin = 47.099 − 44.670 = 2.429
  3. Signed miss = 5.00 − (2.429) = 2.571
  4. Absolute miss = |2.571| = 2.571

The poll overstated the Democrat by 2.6 points and had the right leader.

Where these numbers come from

Poll and result: 538 raw_polls.csv. Poll ID 48888, race ID 63 (538 database).