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2020 President · NC

SurveyUSA · fieldwork ended 2020-10-25 (9 days before the election) · 627 respondents · Online Panel

The poll said

Democrat 48% · Republican 48%

even

The certified result

Democrat 48.59% · Republican 49.93%

R+1.3

The arithmetic

  1. Poll margin = 48 − 48 = 0.00
  2. Actual margin = 48.586 − 49.934 = -1.348
  3. Signed miss = 0.00 − (-1.348) = 1.348
  4. Absolute miss = |1.348| = 1.348

The poll overstated the Democrat by 1.3 points and showed a tie.

Where these numbers come from

Poll and result: 538 raw_polls.csv. Poll ID 72061, race ID 6238 (538 database).