Poll Average Details- OK US Senate - 2004-11-02 21:00:00

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	Thomas A. "Tom" Coburn Thomas A. "Tom" Coburn	Brad Carson Brad Carson	Sheila Bilyeu
Survey USA	10/30	X 1.00000		47.0000 - 0.3265 bias	39.0000 - 0.5274 bias	8.0000 - 1.6199 bias
WPA Intelligence (WPAi)	10/24	X 0.90000		41.0000 - 2.8390 bias	38.0000 - -2.2598 bias	6.0000 - 0.6174 bias
Sooner Poll	10/21	X 0.85000		38.0000 - -4.1838 bias	36.8000 - 3.0796 bias	5.8000 - 1.7557 bias
Rasmussen Reports	10/20	X 0.83333		48.0000 - 1.5977 bias	43.0000 - 0.4180 bias
Consumer Logic	10/19	X 0.81667		40.0000 - -6.7883 bias	47.0000 - 12.7781 bias
Cole Hargrave Snodgrass & Associates (R)	10/11	X 0.68333		46.0000 - 0.2657 bias	41.0000 - 1.7496 bias	3.0000 - -2.6565 bias
Basswood Research (R)	9/27	X 0.45000		41.0000 - 3.9682 bias	40.0000 - -1.9275 bias
Westhill Consulting (D)	9/2	X 0.03333		42.0000 - 6.4636 bias	44.0000 - -6.4636 bias
TOTAL				43.626519	38.474056	5.396321