Poll Average Details- NE US Senate - 2012-11-06 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.

PollMid DateTime WeightInternal Deb Fischer Deb FischerBob Kerrey Bob Kerrey
We Ask America11/1X 1.00000   53.6000 - 0.7827 bias 41.2000 - -0.1522 bias
Pharos Research Group10/28X 0.93333   49.7000 - 1.0762 bias 47.0000 - 1.6664 bias
Gravis Marketing10/28X 0.93333   56.0000 - 0.5484 bias 44.0000 - 0.7560 bias
Wiese Research Associates10/26X 0.90000   48.0000 - 0.1930 bias 45.0000 - 0.4099 bias
Public Opinion Strategies (R)10/25X 0.88333  X 1/2 55.0000 - 2.5105 bias 39.0000 - -1.4814 bias
Harrison-Hickman10/16X 0.73333  X 1/2 50.0000 - -3.5222 bias 45.0000 - 4.6388 bias
TOTAL 51.538428 43.023849