Poll Average Details- MA 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 Mitt Romney	Others	Gary Johnson	Jill Stein No Preference
Princeton Survey Research Associates	11/3	X 1.00000		57.0000 - 1.8159 bias	37.0000 - -1.1956 bias
YouGov	11/3	X 1.00000		57.0000 - 1.4134 bias	37.0000 - 0.0288 bias
Public Policy Polling	11/2	X 0.98333		57.0000 - 1.1680 bias	42.0000 - -0.1800 bias
Western New England University	11/1	X 0.96667		58.0000 - -0.3485 bias	40.0000 - -0.5328 bias
Kimball Political Consulting (R)	11/1	X 0.96667		54.0000 - -2.2504 bias	41.4000 - 3.8426 bias
Suffolk University	10/28	X 0.90000		63.0000 - 1.6356 bias	31.0000 - -2.1317 bias		1.0000 - 1.1435 bias	1.0000 - 1.6218 bias
University of New Hampshire	10/28	X 0.90000		52.0000 - 2.6652 bias	38.0000 - -2.2994 bias
Rasmussen Reports	10/25	X 0.85000		59.0000 - 0.4180 bias	40.0000 - 1.5977 bias
MassINC Polling Group	10/22	X 0.80000		56.0000 - -0.0957 bias	36.0000 - 0.8107 bias
TOTAL				56.265137	38.128970	0.000000	-0.143500	-0.621800