Polls leading up to the 2008 Canadian federal election.
Most news and political affairs sources use the convention of using the last date that the poll was conducted in order to establish the inclusion/exclusion of current events.
PDF Archived 2009-03-27 at the Wayback Machine
Aside from conducting the usual opinion surveys on general party preferences, polling firms also survey public opinion on who would make the best prime minister: Sometimes the information is further broken down, as in this Strategic Counsel[2] poll conducted from February 15 to February 18, 2007: The Strategic Counsel[3] also conducts occasional polls of the overall impression of the party leaders: favourable or not favourable (favourable percentage shown).
[4] Bold indicates parties with members elected to the House of Commons.