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2008 Senate · GA

Scott Rasmussen (Rasmussen Reports) · fieldwork ended 2008-10-30 (5 days before the election) · 500 respondents · IVR

The poll said

Democrat 43% · Republican 48%

R+5.0

The certified result

Democrat 46.83% · Republican 49.76%

R+2.9

The arithmetic

  1. Poll margin = 43 − 48 = -5.00
  2. Actual margin = 46.833 − 49.756 = -2.923
  3. Signed miss = -5.00 − (-2.923) = -2.076
  4. Absolute miss = |-2.076| = 2.076

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 16537, race ID 1550 (538 database).