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2004 President · AR

Mason-Dixon Polling & Strategy · fieldwork ended 2004-10-28 (5 days before the election) · 625 respondents · Live Phone

The poll said

Democrat 43% · Republican 51%

R+8.0

The certified result

Democrat 44.55% · Republican 54.31%

R+9.8

The arithmetic

  1. Poll margin = 43 − 51 = -8.00
  2. Actual margin = 44.548 − 54.306 = -9.758
  3. Signed miss = -8.00 − (-9.758) = 1.758
  4. Absolute miss = |1.758| = 1.758

The poll overstated the Democrat by 1.8 points and had the right leader.

Where these numbers come from

Poll and result: 538 raw_polls.csv. Poll ID 4409, race ID 757 (538 database).