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2017 Governor · VA

Quinnipiac University · fieldwork ended 2017-10-27 (11 days before the election) · 916 respondents · Live Phone

The poll said

Democrat 53% · Republican 36%

D+17.0

The certified result

Democrat 53.89% · Republican 44.98%

D+8.9

The arithmetic

  1. Poll margin = 53 − 36 = 17.00
  2. Actual margin = 53.894 − 44.977 = 8.917
  3. Signed miss = 17.00 − (8.917) = 8.083
  4. Absolute miss = |8.083| = 8.083

The poll overstated the Democrat by 8.1 points and had the right leader.

Where these numbers come from

Poll and result: 538 raw_polls.csv. Poll ID 50516, race ID 1214 (538 database).