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2020 President · PA

Targoz Market Research · fieldwork ended 2020-10-27 (7 days before the election) · 998 respondents · Online Panel

The poll said

Democrat 56% · Republican 42%

D+14.0

The certified result

Democrat 50.01% · Republican 48.84%

D+1.2

The arithmetic

  1. Poll margin = 56 − 42 = 14.00
  2. Actual margin = 50.008 − 48.844 = 1.164
  3. Signed miss = 14.00 − (1.164) = 12.835
  4. Absolute miss = |12.835| = 12.835

The poll overstated the Democrat by 12.8 points and had the right leader.

Where these numbers come from

Poll and result: 538 raw_polls.csv. Poll ID 72588, race ID 6249 (538 database).