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1998 Senate · AZ

Harris Insights & Analytics · fieldwork ended 1998-10-20 (14 days before the election) · 732 respondents · Live Phone

The poll said

Democrat 18% · Republican 66%

R+48.0

The certified result

Democrat 27.16% · Republican 68.75%

R+41.6

The arithmetic

  1. Poll margin = 18 − 66 = -48.00
  2. Actual margin = 27.162 − 68.745 = -41.583
  3. Signed miss = -48.00 − (-41.583) = -6.417
  4. Absolute miss = |-6.417| = 6.417

The poll overstated the Republican by 6.4 points and had the right leader.

Where these numbers come from

Poll and result: 538 raw_polls.csv. Poll ID 54203, race ID 1719 (538 database).