Poll Average Details- WI US Senate - 2004-11-02 23:00:00

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	Russ Feingold Scattering	Tim Michels Russ Darrow	Eugene A. Hem	Arif Khan Arif Khan
Zogby International	10/31	X 1.00000		59.0000 - 0.8870 bias	36.0000 - 0.0434 bias
University of Wisconsin (Badger Poll)	10/27	X 0.93333		51.0000 - 2.7803 bias	36.0000 - -3.0816 bias
St. Norbert College	10/13	X 0.70000		56.0000 - 2.4085 bias	33.0000 - -0.9458 bias
Chicago Tribune	10/11	X 0.66667		57.0000 - 3.1934 bias	33.0000 - -2.7654 bias
Harris Interactive	9/26	X 0.41667		52.0000 - 0.3558 bias	39.0000 - -0.1209 bias
Washington Post/ABC News	9/19	X 0.30000		51.0000 - 2.1552 bias	45.0000 - -1.2476 bias
TOTAL				52.948139	37.397446	0.000000	0.000000