Poll Average Details- VA Lt. Governor - 2009-11-03 18:00:00

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	William T. "Bill" Bolling Patrick C. Muldoon	Jody M. Wagner Jody M. Wagner	Write-In
Survey USA	11/1	X 1.00000		57.0000 - 0.3289 bias	41.0000 - 0.6566 bias
Public Policy Polling	11/1	X 1.00000		54.0000 - -0.2365 bias	41.0000 - 1.4367 bias
YouGov	10/30	X 0.96667		49.0000 - -0.0504 bias	41.0000 - 1.5208 bias
Mason-Dixon	10/29	X 0.95000		47.0000 - 0.8083 bias	34.0000 - 0.4817 bias
Center for Community Research - Roanoke College	10/27	X 0.91667		46.0000 - -0.7577 bias	33.0000 - 0.3805 bias
Clarus Research Group	10/19	X 0.78333		42.0000 - 1.7266 bias	35.0000 - -0.4922 bias
Washington Post/ABC News	10/7	X 0.58333		49.0000 - -1.2476 bias	40.0000 - 2.1552 bias
TOTAL				49.342730	37.047077	0.000000