Poll Average Details- TX US President - D Primary - 2008-03-04 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 Hillary Clinton Hillary ClintonBarack Obama Hillary ClintonJoe Biden Hillary ClintonChris Dodd Hillary ClintonJohn Edwards Hillary ClintonBill Richardson Hillary Clinton
Zogby International3/3X 1.00000   47.0000 44.0000        
American Research Group3/3X 1.00000   50.0000 47.0000        
Survey USA3/2X 0.98333   48.0000 49.0000        
Rasmussen Reports3/2X 0.98333   47.0000 48.0000        
Public Policy Polling3/2X 0.98333   50.0000 44.0000        
Insider Advantage3/2X 0.98333   49.0000 44.0000        
IVR Polls3/2X 0.98333   49.0000 46.0000        
Public Strategies Inc.3/2X 0.98333   46.0000 45.0000        
Mason-Dixon2/29X 0.95000   45.0000 46.0000        
Opinion Dynamics (FOX)2/28X 0.93333   45.0000 48.0000        
Constituent Dynamics2/27X 0.91667   47.0000 50.0000        
Opinion Research Corporation (CNN)2/24X 0.86667   46.0000 50.0000        
Decision Analyst2/21X 0.81667   43.0000 57.0000        
Washington Post/ABC News2/20X 0.80000   48.0000 47.0000        
Hamilton Campaigns (D)2/13X 0.68333   49.0000 41.0000        
TOTAL 47.299279 47.036058 0.000000 0.000000 0.000000 0.000000