Poll Average Details- PA Governor - 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	Ed Rendell Scattering	Lynn Swann Lynn Swann	Unidentified Scattering
Mason-Dixon	11/2	X 1.00000		56.0000 - 0.4277 bias	38.0000 - 0.8543 bias
Muhlenberg College	11/1	X 0.98333		60.0000 - -0.6942 bias	35.0000 - 1.6290 bias
Strategic Vision (R)	10/30	X 0.95000		58.0000 - -0.4798 bias	37.0000 - 1.1151 bias
Quinnipiac University	10/29	X 0.93333		58.0000 - 1.0754 bias	35.0000 - -0.2682 bias
Franklin & Marshall College	10/29	X 0.93333		58.0000 - 0.8112 bias	33.0000 - -0.8927 bias
Zogby Interactive	10/27	X 0.90000		55.2000 - 0.0637 bias	42.0000 - 0.8374 bias
West Chester University	10/25	X 0.86667		57.0000 - 0.4137 bias	32.0000 - 0.3032 bias
Temple University	10/25	X 0.86667		58.0000 - -2.2111 bias	34.0000 - 1.6987 bias
Rasmussen Reports	10/16	X 0.71667		57.0000 - 0.4180 bias	40.0000 - 1.5977 bias
Pew Research	9/21	X 0.30000		58.0000 - 1.4784 bias	30.0000 - -1.7614 bias
Keystone Poll	9/18	X 0.25000		52.0000 - 1.5413 bias	34.0000 - -1.1791 bias
TOTAL				57.274167	35.282477	0.000000