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2004 President · OR

Scott Rasmussen (Rasmussen Reports) · fieldwork ended 2004-10-12 (21 days before the election) · 500 respondents · IVR

The poll said

Democrat 52% · Republican 45%

D+7.0

The certified result

Democrat 51.35% · Republican 47.19%

D+4.2

The arithmetic

  1. Poll margin = 52 − 45 = 7.00
  2. Actual margin = 51.349 − 47.193 = 4.156
  3. Signed miss = 7.00 − (4.156) = 2.844
  4. Absolute miss = |2.844| = 2.844

The poll overstated the Democrat by 2.8 points and had the right leader.

Where these numbers come from

Poll and result: 538 raw_polls.csv. Poll ID 77223, race ID 792 (538 database).