Poll Average Details- VA Lt. Governor - 2017-11-07 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	Justin Fairfax Susan Platt	Jill Holtzman Vogel Jill Holtzman Vogel	Write-In
the polling company™ (R)	11/5	X 1.00000		44.0000 - -0.1545 bias	43.0000 - 1.2390 bias
Christopher Newport University	11/4	X 0.98333		50.0000 - 0.8749 bias	45.0000 - -0.8496 bias
Gravis Marketing	11/3	X 0.96667		46.0000 - 1.1590 bias	42.0000 - 0.2608 bias
Roanoke College	11/2	X 0.95000		45.0000 - -0.8388 bias	45.0000 - 0.3736 bias
Suffolk University	11/1	X 0.93333		44.0000 - 1.6356 bias	40.0000 - -2.1317 bias
George Mason University Schar School	10/29	X 0.88333		49.0000 - 0.3784 bias	43.0000 - -0.6763 bias
Public Policy Polling	9/23	X 0.28333		43.0000 - 1.1680 bias	37.0000 - -0.1800 bias
University of Mary Washington	9/12	X 0.10000		45.0000 - -0.7427 bias	40.0000 - -0.3589 bias
TOTAL				45.618011	42.961195	0.000000