Poll Average Details- BRA President - 2014-10-05 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 Dilma Rousseff Aécio Neves Marina Silva Everaldo Pereira "Pastor Everaldo" Eduardo Jorge Luciana Genro Levy Fidelix José Maria "Zé" de Almeida José Maria Eymael Rui Costa Pimenta Mauro Iasi
Datafolha10/4X 1.00000   44.0000 - 0.3983 bias 26.0000 - -0.8318 bias 24.0000 - 0.2398 bias 1.0000 - -7.5697 bias 1.0000 - -2.2553 bias 2.0000 - -0.5795 bias 1.0000 - -0.0241 bias        
Ibope9/29X 0.91667   39.0000 - -0.2874 bias 19.0000 - -1.7232 bias 25.0000 - 2.6410 bias 1.0000 - -7.7100 bias   1.0000 - -0.6257 bias          
TOTAL 41.538339 23.910296 23.090061 8.636800 3.255300 2.123335 1.024100 0.000000 0.000000 0.000000 0.000000