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This article was published 10/8/2015 (1822 days ago), so information in it may no longer be current.
Use the top slider to zoom in on particular polling dates between April 30 and now. Users can also click on individual parties in the legend to hide them in order to isolate particular parties.
For the purpose of spotting trends during the election, The Winnipeg Free Press is tracking public opinion poll results from major pollsters in the country.
It is important to note that questions posed by the pollsters — and how they gather information — vary considerably.
For instance, for its rolling poll, Nanos asked respondents their "preferred Prime Minister" as well as for which party they'd consider voting. For the sake of continuity in the dataset, the Free Press took numbers from the preferred PM results in that case. In the weeks leading up to the campaign, we used Nanos' ballot tracking data.
Some gather data with live phone interviews while others use automated phone menus.
As Curtis Brown, vice-president of Probe Research Inc., a Winnipeg-based public opinion firm and the polling firm of record for the Free Press, stated, "No survey methodology is perfect, with each having weaknesses that must be overcome."
Consult researcher websites for more information on poll questions and methodologies.
The Winnipeg Free Press invites you to share your opinion on this story in a letter to the editor. A selection of letters to the editor are published daily.
Letters must include the writer’s full name, address, and a daytime phone number. Letters are edited for length and clarity.