Poll Average Details- MI US President - R Primary - 2012-02-28 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 Mitt Romney Rick Santorum Ron Paul Newt Gingrich Gary Johnson Rick Perry Charles E. "Buddy" Roemer III Herman Cain Uncommitted Jon Huntsman Michele Bachmann Fred Karger
Mitchell Research & Communications2/27X 1.00000   37.0000 - -0.8968 bias 36.0000 - -0.8968 bias 9.0000 - -0.8968 bias 9.0000 - -0.8968 bias                
Public Policy Polling2/27X 1.00000   37.0000 - 0.0973 bias 38.0000 - 0.0973 bias 14.0000 - 0.0973 bias 9.0000 - 0.0973 bias                
We Ask America2/26X 0.98333   36.8500 - 0.7827 bias 32.5300 - 0.7827 bias 18.0800 - 0.7827 bias 12.5300 - 0.7827 bias                
American Research Group2/26X 0.98333   35.0000 - 0.9920 bias 36.0000 - 0.9920 bias 15.0000 - 0.9920 bias 8.0000 - 0.9920 bias                
Rasmussen Reports2/26X 0.98333   38.0000 - 1.6097 bias 36.0000 - 1.6097 bias 11.0000 - 1.6097 bias 10.0000 - 1.6097 bias                
Marketing Resource Group2/14X 0.78333   33.0000 - -1.4427 bias 43.0000 - -1.4427 bias 8.0000 - -1.4427 bias 11.0000 - -1.4427 bias                
Detroit News2/13X 0.76667   30.4000 - 3.8363 bias 34.0000 - 3.8363 bias 8.9000 - 3.8363 bias 11.6000 - 3.8363 bias                
EPIC/MRA1/25X 0.45000   31.0000 - 0.9419 bias 10.0000 - 0.9419 bias 14.0000 - 0.9419 bias 26.0000 - 0.9419 bias                
TOTAL 34.584523 33.996322 11.650638 10.427017 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000