Poll Average Details- TX US Senate - 2002-11-05 20:00:00

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	John Cornyn	Ron Kirk	Scott Jameson	Roy Williams	James "Jim" Wright
Zogby International	11/4	X 1.00000		50.0000 - 0.0434 bias	46.0000 - 0.8870 bias
NBC5	11/2	X 0.96667		43.0000 - -2.8589 bias	44.0000 - 4.0429 bias		2.0000 - 1.6922 bias
Survey USA	11/1	X 0.95000		53.0000 - 0.3321 bias	45.0000 - 0.6087 bias
Scripps-Howard	10/29	X 0.90000		44.0000 - 1.4704 bias	35.0000 - 0.7029 bias
Blum & Weprin Associates	10/17	X 0.70000		47.0000 - -1.2293 bias	37.0000 - 1.3155 bias
Fairbanks, Maslin, Maullin & Associates (D)	10/16	X 0.68333		40.0000 - -0.9285 bias	42.0000 - 2.0785 bias
University of Houston	9/21	X 0.26667		42.0000 - -0.0549 bias	36.0000 - -0.8793 bias	3.0000 - 2.1716 bias	3.0000 - 1.6836 bias	1.0000 - 1.1450 bias
TOTAL				46.745300	40.037313	0.828400	0.525876	-0.145000