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2000 Senate · MI

Zogby Analytics · fieldwork ended 2000-10-30 (8 days before the election) · 600 respondents · Live Phone

The poll said

Democrat 48% · Republican 39%

D+9.0

The certified result

Democrat 49.48% · Republican 47.86%

D+1.6

The arithmetic

  1. Poll margin = 48 − 39 = 9.00
  2. Actual margin = 49.475 − 47.861 = 1.614
  3. Signed miss = 9.00 − (1.614) = 7.386
  4. Absolute miss = |7.386| = 7.386

The poll overstated the Democrat by 7.4 points and had the right leader.

Where these numbers come from

Poll and result: 538 raw_polls.csv. Poll ID 6263, race ID 1694 (538 database).