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.

Poll	Mid Date	Time Weight	Internal	Barack Obama	Mitt Romney Mitt Romney	Jill Stein Roseanne Barr	James E. Harris	Ron Paul	Virgil H. Goode, Jr.	Ross C. "Rocky" Anderson	Jerome "Jerry" White	Stephen Durham	Stewart Alexander	Roseanne Barr Leon "Leo" Ray	Tom Hoefling Raymond Delmond Smith	Sheila "Samm" Tittle	Gary Johnson Roger V. Gary
YouGov	11/3	X 1.00000		55.0000 - 1.4134 bias	40.0000 - 0.0288 bias
Field Poll	10/30	X 0.93333		54.0000 - 2.0302 bias	39.0000 - 0.8139 bias
M4Strategies	10/28	X 0.90000		55.9000 - 0.9618 bias	33.0000 - 0.3586 bias
Public Policy Institute of California (PPIC)	10/21	X 0.78333		53.0000 - 0.3912 bias	41.0000 - 3.9791 bias
Greenberg Quinlan Rosner Research (D)	10/21	X 0.78333		54.0000 - 2.2053 bias	40.0000 - -1.6043 bias
Princeton Survey Research Associates	10/15	X 0.68333		53.0000 - 1.8159 bias	38.0000 - -1.1956 bias	1.0000 - 0.5865 bias											2.0000 - 3.4817 bias
Survey USA	10/9	X 0.58333		53.0000 - 0.5274 bias	39.0000 - 0.3265 bias
California Business Roundtable/Pepperdine University	9/12	X 0.13333		55.4000 - 1.4546 bias	33.4000 - -0.1343 bias
TOTAL				52.775243	37.998793	0.413500	0.000000	0.000000	0.000000	0.000000	0.000000	0.000000	0.000000	0.000000	0.000000	0.000000	-1.481700