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2004 President · OR

Moore Information Group · fieldwork ended 2004-10-25 (8 days before the election) · 450 respondents · Live Phone

The poll said

Democrat 47% · Republican 45%

D+2.0

The certified result

Democrat 51.35% · Republican 47.19%

D+4.2

The arithmetic

  1. Poll margin = 47 − 45 = 2.00
  2. Actual margin = 51.349 − 47.193 = 4.156
  3. Signed miss = 2.00 − (4.156) = -2.156
  4. Absolute miss = |-2.156| = 2.156

The poll overstated the Republican by 2.2 points and had the right leader.

Where these numbers come from

Poll and result: 538 raw_polls.csv. Poll ID 4477, race ID 792 (538 database).