Poll Average Details- IA US President - D Caucus - 2016-02-01 19:00:00

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	Hillary Clinton Hillary Clinton	Bernie Sanders Hillary Clinton	Martin J. O'Malley Hillary Clinton	Uncommitted Hillary Clinton
Emerson College	1/31	X 1.00000		50.6000	42.6000	4.1000
Quinnipiac University	1/31	X 1.00000		46.0000	49.0000	3.0000
Overtime Politics	1/30	X 0.98333		47.0000	48.0000	3.0000
Selzer & Co.	1/29	X 0.96667		45.0000	42.0000	3.0000
Gravis Marketing	1/27	X 0.93333		53.0000	42.0000	5.0000
Public Policy Polling	1/27	X 0.93333		48.0000	40.0000	7.0000
Marist Institute	1/26	X 0.91667		48.0000	45.0000	3.0000
Monmouth University	1/26	X 0.91667		47.0000	42.0000	6.0000
American Research Group	1/24	X 0.88333		45.0000	48.0000	3.0000
Beacon Research (D) / Shaw & Company (R) - FOX News	1/21	X 0.83333		48.0000	42.0000	3.0000
YouGov	1/21	X 0.83333		46.0000	47.0000	5.0000
Opinion Research Corporation (CNN)	1/20	X 0.81667		43.0000	51.0000	4.0000
Loras College	1/18	X 0.78333		59.0000	30.0000	7.0000
TOTAL				48.057910	43.847458	4.276836	0.000000