Poll Average Details- PA 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.

Poll	Mid Date	Time Weight	Internal	Barack Obama Barack Obama	Mitt Romney Rick Santorum	Gary Johnson	Write-In	Jill Stein
Angus Reid	11/4	X 1.00000		51.0000 - 0.9842 bias	47.0000 - 1.4048 bias
Gravis Marketing	11/4	X 1.00000		49.0000 - 1.1590 bias	46.0000 - 0.2608 bias
YouGov	11/3	X 0.98333		52.0000 - 1.4134 bias	44.0000 - 0.0288 bias
Muhlenberg College	11/3	X 0.98333		49.0000 - -0.6942 bias	46.0000 - 1.6290 bias
Public Policy Polling	11/3	X 0.98333		52.0000 - 1.1680 bias	46.0000 - -0.1800 bias
Susquehanna Polling & Research (SP&R)	10/31	X 0.93333		47.0000 - 1.4286 bias	47.0000 - -1.1849 bias
Pulse Opinion Research	10/30	X 0.91667		49.0000 - -0.2544 bias	46.0000 - 1.6194 bias
Franklin & Marshall College	10/28	X 0.88333		48.0000 - 0.8112 bias	44.0000 - -0.8927 bias	1.0000 - 0.3915 bias		1.0000 - 1.0238 bias
Philadelphia Inquirer	10/25	X 0.83333		49.0000 - 0.6084 bias	43.0000 - 1.0435 bias
Rasmussen Reports	10/24	X 0.81667		51.0000 - 0.4180 bias	46.0000 - 1.5977 bias
Pharos Research Group	10/21	X 0.76667		49.4700 - 1.6664 bias	45.5300 - 1.0763 bias
Quinnipiac University	10/14	X 0.65000		50.0000 - 1.0754 bias	46.0000 - -0.2682 bias
QStar News	10/10	X 0.58333		46.2000 - -5.3880 bias	49.0200 - 4.5177 bias	3.5800 - 1.5597 bias
Public Opinion Strategies (R)	10/8	X 0.55000		47.0000 - -1.2825 bias	45.0000 - 2.6066 bias
Siena Research Institute	10/5	X 0.50000		43.0000 - 0.4840 bias	40.0000 - -0.0165 bias
We Ask America	9/18	X 0.21667		48.1000 - -0.1888 bias	42.2000 - 0.7934 bias	0.8000 - 1.2509 bias
TOTAL				48.751746	44.647732	0.961379	0.000000	-0.023800