Poll Average Details- MI Governor - 2010-11-02 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	Rick Snyder Peter Hoekstra	Virg Bernero Andy Dillon	Kenneth L. Proctor	Harley G. Mikkelson	Angelo Scott Brown	Larry James Hutchinson, Jr.	Stacey Mathia	Linda Blauwkamp	George DeLorean	James Mote	Thomas Neuenfeldt	Mark Van Kleeck	Dovelyn Waynick
Glengariff Group	10/26	X 1.00000		53.0000 - -0.8955 bias	35.0000 - 0.7307 bias
Rasmussen Reports	10/17	X 0.85000		54.0000 - 1.5749 bias	34.0000 - 0.4222 bias
EPIC/MRA	10/7	X 0.68333		49.0000 - 0.5993 bias	29.0000 - 0.9594 bias
Public Policy Polling	9/19	X 0.38333		52.0000 - -0.1911 bias	31.0000 - 1.3449 bias
Rossman Group	9/13	X 0.28333		51.3000 - 5.8045 bias	31.8000 - -3.1128 bias
Mitchell Research & Communications	8/29	X 0.03333		53.0000 - -0.5753 bias	26.0000 - 1.8082 bias
TOTAL				51.406228	32.176592	0.000000	0.000000	0.000000	0.000000	0.000000	0.000000	0.000000	0.000000	0.000000	0.000000	0.000000