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2014 Governor · CO

Public Policy Polling · fieldwork ended 2014-10-18 (17 days before the election) · 778 respondents · IVR/Online Panel

The poll said

Democrat 45% · Republican 44%

D+1.0

The certified result

Democrat 49.30% · Republican 45.95%

D+3.3

The arithmetic

  1. Poll margin = 45 − 44 = 1.00
  2. Actual margin = 49.296 − 45.954 = 3.342
  3. Signed miss = 1.00 − (3.342) = -2.342
  4. Absolute miss = |-2.342| = 2.342

The poll overstated the Republican by 2.3 points and had the right leader.

Where these numbers come from

Poll and result: 538 raw_polls.csv. Poll ID 33784, race ID 1247 (538 database).