Poll Average Details- WA US Senate - 2006-11-07 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	Maria Cantwell Maria Cantwell	Mike McGavick Mike McGavick	Bruce Guthrie	Aaron Dixon	Robin Adair
Polimetrix	11/5	X 1.00000		57.0000 - 1.9452 bias	43.0000 - 1.6909 bias
Strategic Vision (R)	11/4	X 0.98333		53.0000 - -0.4798 bias	42.0000 - 1.1151 bias
Mason-Dixon	11/2	X 0.95000		54.0000 - 0.4628 bias	38.0000 - 0.8197 bias
Washington Poll (University of Washington)	10/31	X 0.91667		53.0000 - 0.1519 bias	41.0000 - 0.6239 bias
Survey USA	10/29	X 0.88333		54.0000 - 0.6087 bias	41.0000 - 0.3321 bias	2.0000 - 1.3026 bias	1.0000 - 0.9606 bias	1.0000 - 1.6199 bias
Zogby Interactive	10/27	X 0.85000		50.0000 - 0.0637 bias	46.1000 - 0.8374 bias
Rasmussen Reports	10/26	X 0.83333		54.0000 - 0.4222 bias	42.0000 - 1.5749 bias
TOTAL				53.174655	40.820166	0.697400	0.039400	-0.619900