Poll Average Details- Mexican President - 2006-07-02 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	Andrés Manuel López Obrador	Felipe Calderón Hinojosa Santiago Creel Miranda	Roberto Madrazo Pintado	Dora Patricia Mercado Castro	Roberto Campa Cifrián	Others	Blank - Void
Marketing Politico	6/21	X 1.00000		33.9000 - -0.1801 bias	36.8000 - 2.2414 bias	25.8000 - 4.4789 bias
Universidad de Guadalajara	6/20	X 0.98333		35.8000 - 2.5339 bias	33.5000 - -0.4810 bias	25.3000 - 4.4873 bias
Milenio	6/20	X 0.98333		35.4000 - 0.0550 bias	30.5000 - -1.5091 bias	29.6000 - 7.3136 bias	4.1000 - 1.3947 bias	0.5000 - 0.3814 bias
El Universal	6/19	X 0.96667		36.0000 - 0.6904 bias	34.0000 - 0.1101 bias	26.0000 - 3.7431 bias	3.0000 - 0.0166 bias	1.0000 - 0.4012 bias
Consulta Mitofsky	6/19	X 0.96667		36.0000 - 0.6904 bias	33.0000 - -0.6534 bias	27.0000 - 4.7431 bias	3.0000 - -0.8550 bias	1.0000 - -0.6748 bias
Reforma	6/19	X 0.96667		36.0000 - 1.0540 bias	34.0000 - -0.6004 bias	25.0000 - 2.9957 bias	3.0000 - 0.2508 bias	1.0000 - 1.3459 bias
GEA-ISA	6/18	X 0.95000		31.0000 - 1.5952 bias	33.0000 - 6.1659 bias	20.0000 - 1.5527 bias
Ulises Beltrán y Asociados	6/18	X 0.95000		34.0000 - 0.8606 bias	34.0000 - 0.2769 bias	26.0000 - 5.4027 bias
Parametría	6/18	X 0.95000		36.5000 - 1.1904 bias	32.5000 - -4.7576 bias	27.0000 - 4.7431 bias	3.0000 - 1.0996 bias	1.0000 - 0.4997 bias
Zogby International	6/15	X 0.90000		31.3000 - -1.6175 bias	34.5000 - 1.2434 bias	27.1000 - 6.9143 bias
TOTAL				33.918291	33.383997	21.255418	2.841436	0.508004	0.000000	0.000000