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2004 Senate · NV

Zogby Analytics · fieldwork ended 2004-10-26 (7 days before the election) · 600 respondents · Live Phone

The poll said

Democrat 57% · Republican 34%

D+23.0

The certified result

Democrat 61.08% · Republican 35.14%

D+25.9

The arithmetic

  1. Poll margin = 57 − 34 = 23.00
  2. Actual margin = 61.082 − 35.138 = 25.944
  3. Signed miss = 23.00 − (25.944) = -2.944
  4. Absolute miss = |-2.944| = 2.944

The poll overstated the Republican by 2.9 points and had the right leader.

Where these numbers come from

Poll and result: 538 raw_polls.csv. Poll ID 4485, race ID 1633 (538 database).