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2010 Senate · UT

Dan Jones & Associates · fieldwork ended 2010-10-27 (6 days before the election) · 1,206 respondents · Live Phone

The poll said

Democrat 30% · Republican 57%

R+27.0

The certified result

Democrat 32.76% · Republican 61.58%

R+28.8

The arithmetic

  1. Poll margin = 30 − 57 = -27.00
  2. Actual margin = 32.762 − 61.583 = -28.821
  3. Signed miss = -27.00 − (-28.821) = 1.821
  4. Absolute miss = |1.821| = 1.821

The poll overstated the Democrat by 1.8 points and had the right leader.

Where these numbers come from

Poll and result: 538 raw_polls.csv. Poll ID 32774, race ID 1540 (538 database).