Poll Average Details- Chicago Mayor - 2011-02-22 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.

PollMid DateTime WeightInternal Rahm Emanuel Gery Chico Carol Moseley Braun Miguel Del Valle Patricia Van Pelt William "Dock" Walls, III John Hawkins Write-In Peter Dale Kauss Tom "Tommy" Hanson Fred K. White Alfredo Castillo Alex "AG" George Anthony Brent "Tony" Gray John Hu D'Anne E. Burley
We Ask America2/18X 1.00000   54.7500 - 0.0196 bias 22.2700 - 0.0196 bias 7.7500 - 0.0196 bias 9.9100 - 0.0196 bias 3.4500 - 0.0196 bias 1.8700 - 0.0196 bias                    
Victory Research2/12X 0.90000  X 1/2 44.8000 - 0.0262 bias 16.1000 - 0.0262 bias 22.5000 - 0.0262 bias 9.6000 - 0.0262 bias 0.9000 - 0.0262 bias 1.1000 - 0.0262 bias                    
Market Shares Corp2/9X 0.85000   49.0000 - 0.6755 bias 19.0000 - 0.6755 bias 10.0000 - 0.6755 bias 8.0000 - 0.6755 bias                        
Richard Day Research2/7X 0.81667   54.0000 - 0.6755 bias 14.0000 - 0.6755 bias 6.0000 - 0.6755 bias 8.0000 - 0.6755 bias                        
Anzalone Liszt Research (D)1/6X 0.28333   42.0000 - 0.6755 bias 10.0000 - 0.6755 bias 26.0000 - 0.6755 bias 7.0000 - 0.6755 bias                        
TOTAL 50.356290 17.230309 10.968545 8.293545 2.636972 1.609386 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000