Poll Average Details- VA US Senate - 2012-11-06 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.

PollMid DateTime WeightInternal Tim Kaine George F. Allen George F. Allen Write-In Hank O'Leary
JZ Analytics / Zogby Analytics11/4X 1.00000   49.8000 - -1.6059 bias 42.5000 - -3.7493 bias    
Reuters/Ipsos11/4X 1.00000   48.0000 - 3.1158 bias 46.0000 - 0.8563 bias    
Public Policy Polling11/4X 1.00000   52.0000 - 1.1680 bias 46.0000 - -0.1800 bias    
YouGov11/3X 0.98333   46.0000 - 1.4134 bias 46.0000 - 0.0288 bias    
Marist Institute11/2X 0.96667   49.0000 - 0.7635 bias 46.0000 - -0.4397 bias    
We Ask America11/1X 0.95000   49.6000 - -0.1888 bias 50.4000 - 0.7934 bias    
Pulse Opinion Research10/30X 0.91667   48.0000 - -0.2544 bias 48.0000 - 1.6194 bias    
Quinnipiac University10/28X 0.88333   50.0000 - 1.0754 bias 46.0000 - -0.2682 bias    
Roanoke College10/26X 0.85000   42.0000 - -0.8388 bias 47.0000 - 0.3736 bias    
Abt SRBI10/26X 0.85000   51.0000 - 0.1922 bias 44.0000 - -0.7883 bias    
Gravis Marketing10/26X 0.85000   46.0000 - 1.1590 bias 48.0000 - 0.2608 bias    
Rasmussen Reports10/24X 0.81667   49.0000 - 0.4180 bias 48.0000 - 1.5977 bias    
Wenzel Strategies (R)10/20X 0.75000   46.1000 - -3.2645 bias 49.4000 - 4.5835 bias    
Garin-Hart-Yang Research (D)10/18X 0.71667  X 1/2 48.0000 - 2.7672 bias 44.0000 - -2.3099 bias    
Old Dominion University10/17X 0.70000   50.0000 - 1.7522 bias 43.0000 - -0.8853 bias    
Kimball Political Consulting (R)10/13X 0.63333   43.4000 - -2.2504 bias 50.1000 - 3.8426 bias    
McLaughlin & Associates (R)10/9X 0.56667  X 1/2 46.0000 - -3.4211 bias 49.0000 - 4.0805 bias    
Suffolk University9/26X 0.35000   44.0000 - 1.6356 bias 44.0000 - -2.1317 bias    
Beacon Research (D) / Shaw & Company (R) - FOX News9/18X 0.21667   47.0000 - 1.0608 bias 43.0000 - -0.5021 bias    
Washington Post/ABC News9/16X 0.18333   51.0000 - 2.1552 bias 43.0000 - -1.2476 bias    
TOTAL 47.682910 46.142677 0.000000 0.000000