Poll Average Details- MI Governor - 2002-11-05 19:00:00

The Poll Average is a weighted and adjusted number.
[Mid Date Column] All times are calculated by the middle date of the poll if it spans multiple days.
A time window of 2 months prior to the most recent poll is used.
[Time Weight Column] Polls are weighted in the amount they contribute to the final results in a linear fashion in this time window - the newest poll has a weight of 1, a poll 30 days prior will have a weight of 0.5 and a poll 60 days out will have a weight of 0. If the same pollster has more than one poll in this time period, only the newest will be used.
[Internal Column] If a poll is marked as being an internal poll for one of the candidates, it's weight will be halved.
[Candidate Columns, Bias] OurCampaigns has calculated partisan bias figures for all Polling Firms based on data from final vote totals in races they have polled. These amounts are subtracted from the poll result - in the case the bias figure is negative it will effectively be added to the poll result and appear as two dashes (minus a negative = plus). [TOTAL Row] The adjusted weights are summed for each poll result and the adjusted poll results for each candidate are multiplied by the poll weight and then summed. Each candidate's poll sum is divided by their weight sum to give the total.

Poll	Mid Date	Time Weight	Internal	Jennifer Granholm	Dick Posthumus	Doug Campbell	Joseph M. Pilchak	Don Mackle	Angelo Scott Brown	Mark A. McFarlin
Survey USA	11/3	X 1.00000		52.0000 - 0.6566 bias	46.0000 - 0.3289 bias
EPIC/MRA	10/30	X 0.93333		50.0000 - 1.0894 bias	39.0000 - 0.3787 bias	3.0000 - 1.6484 bias
Mitchell Research & Communications	10/30	X 0.93333		51.0000 - 1.7123 bias	38.0000 - -0.6325 bias
Free Press	10/29	X 0.91667		54.0000 - 2.6293 bias	41.0000 - -1.5581 bias
Marketing Resource Group	10/1	X 0.45000		47.0000 - 1.7470 bias	36.0000 - -1.0755 bias
TOTAL				49.712316	40.977216	1.351600	0.000000	0.000000	0.000000	0.000000