Poll Average Details- IL US President - 2012-11-06 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 Barack Obama John Joseph PolachekMitt Romney Gary Johnson Virgil H. Goode, Jr. Jill Stein Jill SteinJames N. Clymer Ross C. "Rocky" Anderson Jerome "Jerry" White Stephen Durham Roy Wayne Tyree Michael Hawkins Phyllis Scherrer Tom Hoefling Jonathan D. Ellis Jill Reed Tom Cary Cecil James Roth Dennis Knill Stephen James Frost Paul Chehade Barbara Ann Prokopich James Struck Lynn Maxwell
YouGov11/3X 1.00000   57.0000 - 1.4663 bias 38.0000 - -0.0047 bias                                          
We Ask America10/30X 0.93333   57.0000 - -0.1888 bias 41.0000 - 0.7934 bias                                          
Market Shares Corp10/8X 0.56667   55.0000 - -0.1166 bias 36.0000 - -0.3029 bias                                          
Southern Illinois University9/10X 0.10000   47.1000 - 0.8155 bias 33.8000 - -1.5962 bias                                          
TOTAL 55.681194 38.323894 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000