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2012 President · MN

Public Policy Polling · fieldwork ended 2012-10-31 (6 days before the election) · 772 respondents · IVR · partisan sponsor (DEM)

The poll said

Democrat 53% · Republican 44%

D+9.0

The certified result

Democrat 52.65% · Republican 44.96%

D+7.7

The arithmetic

  1. Poll margin = 53 − 44 = 9.00
  2. Actual margin = 52.652 − 44.958 = 7.694
  3. Signed miss = 9.00 − (7.694) = 1.306
  4. Absolute miss = |1.306| = 1.306

The poll overstated the Democrat by 1.3 points and had the right leader.

Where these numbers come from

Poll and result: 538 raw_polls.csv. Poll ID 30596, race ID 676 (538 database).