Poll Average Details- MA Governor - D Primary - 2006-09-17 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 Deval Patrick Chris GabrieliChris Gabrieli Chris GabrieliThomas F. Reilly Chris Gabrieli Others Chris Gabrieli
Survey USA9/17X 1.00000   46.0000 29.0000 22.0000  
Suffolk University9/17X 1.00000   37.0000 29.0000 21.0000  
Boston Globe9/15X 0.96667   46.0000 25.0000 18.0000  
KRC Communications Research9/10X 0.88333   35.6000 25.6000 19.4000  
University of New Hampshire8/23X 0.58333   31.0000 30.0000 27.0000  
TOTAL 39.924060 27.581955 21.042105 0.000000