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2008 Governor · UT

Mason-Dixon Polling & Strategy · fieldwork ended 2008-10-24 (11 days before the election) · 400 respondents · Live Phone

The poll said

Democrat 17% · Republican 73%

R+56.0

The certified result

Democrat 19.73% · Republican 77.63%

R+57.9

The arithmetic

  1. Poll margin = 17 − 73 = -56.00
  2. Actual margin = 19.725 − 77.634 = -57.909
  3. Signed miss = -56.00 − (-57.909) = 1.909
  4. Absolute miss = |1.909| = 1.909

The poll overstated the Democrat by 1.9 points and had the right leader.

Where these numbers come from

Poll and result: 538 raw_polls.csv. Poll ID 16680, race ID 1319 (538 database).