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2006 Governor · MI

YouGov · fieldwork ended 2006-10-31 (7 days before the election) · 800 respondents · Online Panel

The poll said

Democrat 55% · Republican 43%

D+12.0

The certified result

Democrat 56.36% · Republican 42.30%

D+14.1

The arithmetic

  1. Poll margin = 55 − 43 = 12.00
  2. Actual margin = 56.363 − 42.304 = 14.059
  3. Signed miss = 12.00 − (14.059) = -2.059
  4. Absolute miss = |-2.059| = 2.059

The poll overstated the Republican by 2.1 points and had the right leader.

Where these numbers come from

Poll and result: 538 raw_polls.csv. Poll ID 24886, race ID 1344 (538 database).