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2016 President · OH

Remington Research Group · fieldwork ended 2016-10-21 (18 days before the election) · 1,971 respondents · IVR/Live Phone

The poll said

Democrat 42% · Republican 46%

R+4.0

The certified result

Democrat 43.56% · Republican 51.69%

R+8.1

The arithmetic

  1. Poll margin = 42 − 46 = -4.00
  2. Actual margin = 43.558 − 51.688 = -8.130
  3. Signed miss = -4.00 − (-8.130) = 4.130
  4. Absolute miss = |4.130| = 4.130

The poll overstated the Democrat by 4.1 points and had the right leader.

Where these numbers come from

Poll and result: 538 raw_polls.csv. Poll ID 47330, race ID 637 (538 database).