Poll Average Details- MI US Senate - 2006-11-07 23:00:00

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	Debbie Stabenow Debbie Stabenow	Michael J. "Mike" Bouchard Michael J. "Mike" Bouchard	David Sole	Leonard Schwartz	Bret McAtee	W. Dennis FitzSimons
Polimetrix	11/5	X 1.00000		55.0000 - 1.9452 bias	40.0000 - 1.6909 bias
Strategic Vision (R)	11/4	X 0.98333		50.0000 - -0.4798 bias	44.0000 - 1.1151 bias
Survey USA	11/4	X 0.98333		52.0000 - 0.6087 bias	42.0000 - 0.3321 bias	2.0000 - 0.9606 bias	2.0000 - 1.3026 bias		1.0000 - 1.1366 bias
Selzer & Co.	11/2	X 0.95000		53.0000 - 1.0019 bias	34.0000 - -0.2736 bias
Mason-Dixon	11/2	X 0.95000		53.0000 - 0.4628 bias	37.0000 - 0.8197 bias
EPIC/MRA	11/1	X 0.93333		51.0000 - 0.9594 bias	38.0000 - 0.5993 bias
Zogby Interactive	10/27	X 0.85000		49.3000 - 0.0637 bias	41.9000 - 0.8374 bias
Research 2000	10/24	X 0.80000		52.0000 - 1.1463 bias	41.0000 - 0.1379 bias
Rasmussen Reports	10/22	X 0.76667		56.0000 - 0.4222 bias	40.0000 - 1.5749 bias
Marketing Resource Group	9/24	X 0.30000		52.0000 - 1.9025 bias	30.0000 - -1.0347 bias
TOTAL				51.594582	38.706899	1.039400	0.697400	0.000000	-0.136600