Skip to content

2020 President · NC

Harper Polling · fieldwork ended 2020-10-24 (10 days before the election) · 504 respondents · Live Phone

The poll said

Democrat 47% · Republican 46%

D+1.0

The certified result

Democrat 48.59% · Republican 49.93%

R+1.3

The arithmetic

  1. Poll margin = 47 − 46 = 1.00
  2. Actual margin = 48.586 − 49.934 = -1.348
  3. Signed miss = 1.00 − (-1.348) = 2.348
  4. Absolute miss = |2.348| = 2.348

The poll overstated the Democrat by 2.3 points and had the wrong leader.

Where these numbers come from

Poll and result: 538 raw_polls.csv. Poll ID 72139, race ID 6238 (538 database).