Poll Average Details- MN US Senate - 2008-11-04 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	Norm Coleman	Al Franken	Dean M. Barkley	Write-In	Michael James Cavlan	Charles A. Aldrich	James Niemackl	Anthony Keith Price
YouGov	11/1	X 1.00000		39.0000 - 0.0288 bias	40.0000 - 1.4134 bias
Survey USA	11/1	X 1.00000		44.0000 - 0.3265 bias	39.0000 - 0.5274 bias	16.0000 - 0.2458 bias
Princeton Survey Research Associates	10/31	X 0.98333		38.0000 - -1.1956 bias	42.0000 - 1.8159 bias	15.0000 - 0.7498 bias
Public Policy Polling	10/30	X 0.96667		40.0000 - -0.1800 bias	45.0000 - 1.1680 bias	14.0000 - 1.1797 bias
Research 2000	10/29	X 0.95000		43.0000 - 0.1379 bias	40.0000 - 1.1463 bias	15.0000 - 10.8738 bias
Humphrey Institute/University of Minnesota	10/28	X 0.93333		37.0000 - -1.4775 bias	41.0000 - 1.3451 bias	17.0000 - 1.9238 bias
Mason-Dixon	10/28	X 0.93333		42.0000 - 0.8543 bias	36.0000 - 0.4277 bias	12.0000 - 1.1771 bias
Rasmussen Reports	10/28	X 0.93333		43.0000 - 1.5977 bias	39.0000 - 0.4180 bias	14.0000 - 0.3537 bias
University of Wisconsin (Badger Poll)	10/23	X 0.85000		34.2000 - -3.0816 bias	40.2000 - 2.7803 bias	15.1000 - 1.7190 bias
Saint Cloud State University	10/22	X 0.83333		36.0000 - -0.4630 bias	27.0000 - 2.5246 bias	16.0000 - 5.1006 bias
Quinnipiac University	10/12	X 0.66667		36.0000 - -0.2682 bias	38.0000 - 1.0754 bias	18.0000 - 4.4127 bias
Mellman Group (D)	10/1	X 0.48333		36.0000 - -2.5182 bias	38.0000 - 3.6270 bias	12.0000 - -0.1962 bias
TOTAL				39.738129	37.548452	12.419423	0.000000	0.000000	0.000000	0.000000	0.000000