Poll Average Details- CA US President - 2012-11-06 22:00:00

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 Mitt Romney Mitt RomneyJill Stein Roseanne BarrJames E. Harris Ron Paul Virgil H. Goode, Jr. Ross C. "Rocky" Anderson Jerome "Jerry" White Stephen Durham Stewart Alexander Roseanne Barr Leon "Leo" RayTom Hoefling Raymond Delmond SmithSheila "Samm" Tittle Gary Johnson Roger V. Gary
YouGov11/3X 1.00000   55.0000 - 1.3621 bias 40.0000 - 0.0717 bias                        
Field Poll10/30X 0.93333   54.0000 - 1.9551 bias 39.0000 - 1.3589 bias                        
M4Strategies10/28X 0.90000   55.9000 - 0.9618 bias 33.0000 - 0.3586 bias                        
Public Policy Institute of California (PPIC)10/21X 0.78333   53.0000 - 0.5676 bias 41.0000 - 3.1774 bias                        
Greenberg Quinlan Rosner Research (D)10/21X 0.78333   54.0000 - 2.1752 bias 40.0000 - -1.5423 bias                        
Princeton Survey Research Associates10/15X 0.68333   53.0000 - 1.7657 bias 38.0000 - -1.1956 bias 1.0000 - 0.5865 bias                     2.0000 - 3.4817 bias
Survey USA10/9X 0.58333   53.0000 - 0.4044 bias 39.0000 - 0.3780 bias                        
California Business Roundtable/Pepperdine University9/12X 0.13333   55.4000 - 1.4546 bias 33.4000 - -0.1343 bias                        
TOTAL 52.794699 37.998418 0.413500 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 -1.481700