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2020 Senate · AL

Moore Information Group · fieldwork ended 2020-10-13 (21 days before the election) · 504 respondents · Live Phone · partisan sponsor (REP)

The poll said

Democrat 40% · Republican 55%

R+15.0

The certified result

Democrat 39.74% · Republican 60.09%

R+20.4

The arithmetic

  1. Poll margin = 40 − 55 = -15.00
  2. Actual margin = 39.737 − 60.095 = -20.358
  3. Signed miss = -15.00 − (-20.358) = 5.359
  4. Absolute miss = |5.359| = 5.359

The poll overstated the Democrat by 5.4 points and had the right leader.

Where these numbers come from

Poll and result: 538 raw_polls.csv. Poll ID 71434, race ID 6266 (538 database).