Poll Average Details- MT US Senate - 2020-11-03 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	Steve Daines Daniel R. Larson	Steve Bullock Steve Bullock
Public Policy Polling	10/27	X 1.00000		47.0000 - -0.1800 bias	48.0000 - 1.1680 bias
Montana State University Billings	10/24	X 0.95000		47.0000 - -1.1286 bias	48.0000 - 0.9098 bias
Strategies 360	10/20	X 0.88333		48.0000 - -1.1472 bias	47.0000 - 1.9465 bias
Siena Research Institute	10/20	X 0.88333		49.0000 - -0.0165 bias	46.0000 - 0.4840 bias
RMG Research	10/18	X 0.85000		49.0000 - -1.9745 bias	47.0000 - 3.2526 bias
Emerson College	10/7	X 0.66667		51.8000 - 0.6906 bias	42.7000 - 0.8084 bias
Data for Progress	10/5	X 0.63333		47.0000 - -0.9368 bias	48.0000 - 1.5464 bias
Montana State University Bozeman	10/2	X 0.58333		47.0000 - -2.3613 bias	49.0000 - 3.4950 bias
Fabrizio Ward and Hart Research	9/5	X 0.13333		50.0000 - -0.2048 bias	47.0000 - 2.9444 bias
TOTAL				49.042441	45.345273