Poll Average Details- MI US President - 2008-11-04 23:00:00

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 Barack Obama Hillary ClintonJohn McCain Mitt RomneyCynthia McKinney Bob Barr Ralph Nader Brian P. Moore Alan L. Keyes Chuck Baldwin
YouGov11/1X 1.00000   55.0000 - 1.4134 bias 42.0000 - 0.0288 bias            
Selzer & Co.10/31X 0.98333   53.0000 - 1.0019 bias 37.0000 - -0.2736 bias            
Strategic Vision (R)10/29X 0.95000   54.0000 - -0.4798 bias 41.0000 - 1.1151 bias            
EPIC/MRA10/28X 0.93333   50.0000 - 0.7445 bias 38.0000 - 0.7895 bias            
Rasmussen Reports10/28X 0.93333   53.0000 - 0.4180 bias 43.0000 - 1.5977 bias            
Big Ten10/22X 0.83333   58.0000 - 3.5079 bias 36.0000 - -1.9740 bias            
Quinnipiac University10/12X 0.66667   54.0000 - 1.0754 bias 38.0000 - -0.2682 bias            
Public Policy Polling10/1X 0.48333   51.0000 - 1.1680 bias 41.0000 - -0.1800 bias            
Opinion Research Corporation (CNN)9/23X 0.35000   51.0000 - 0.8608 bias 46.0000 - 0.4312 bias            
Marketing Resource Group9/19X 0.28333   43.0000 - 1.9320 bias 46.0000 - -1.2748 bias            
American Research Group9/19X 0.28333   48.0000 - -0.0031 bias 46.0000 - 0.7892 bias            
Marist Institute9/17X 0.25000   52.0000 - 0.7635 bias 43.0000 - -0.4397 bias            
TOTAL 51.810752 40.246570 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000