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2016 Senate · FL

The Tyson Group · fieldwork ended 2016-10-19 (20 days before the election) · 1,000 respondents · Live Phone

The poll said

Democrat 38% · Republican 43%

R+5.0

The certified result

Democrat 44.31% · Republican 51.98%

R+7.7

The arithmetic

  1. Poll margin = 38 − 43 = -5.00
  2. Actual margin = 44.315 − 51.981 = -7.666
  3. Signed miss = -5.00 − (-7.666) = 2.666
  4. Absolute miss = |2.666| = 2.666

The poll overstated the Democrat by 2.7 points and had the right leader.

Where these numbers come from

Poll and result: 538 raw_polls.csv. Poll ID 47462, race ID 93 (538 database).