Poll Average Details- MA Governor - 2002-11-05 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 Mitt Romney Shannon P. O'Brien Jill Stein Carla Howell Others Barbara Johnson
KRC Communications Research10/30X 1.00000   40.0000 - -2.2539 bias 41.0000 - 3.6366 bias 5.0000 - -2.4704 bias 3.0000 - 2.1756 bias   4.0000 - 3.6022 bias
RKM Research and Communications10/27X 0.95000   38.0000 - 0.4581 bias 44.0000 - 0.8359 bias 4.0000 - 1.0576 bias 1.0000 - 0.0861 bias   1.0000 - -0.2760 bias
Harvard Institute of Politics10/27X 0.95000   39.0000 - -2.8200 bias 41.0000 - -2.4769 bias 4.0000 - 1.1633 bias 1.0000 - 0.1126 bias   1.0000 - 7.5865 bias
Suffolk University10/22X 0.86667   37.2000 - -2.1317 bias 36.7000 - 1.6356 bias 2.5000 - 0.4664 bias 1.0000 - 1.1435 bias   1.0000 - 1.6824 bias
Zogby International10/9X 0.65000   40.0000 - 0.0434 bias 42.0000 - 0.8870 bias        
Schneiders/Della Volpe/Schulman10/4X 0.56667   40.0000 - -1.5747 bias 40.0000 - 3.2566 bias 2.0000 - -1.0782 bias 1.0000 - 0.1546 bias    
Boston Herald9/19X 0.31667   42.0000 - -3.4811 bias 45.0000 - 6.4288 bias        
TOTAL 40.692135 39.588758 3.800149 0.666999 0.000000 -1.390776