Proportional representation for Canada, with a mixed member proportional system (MMP) is the main recommendation of the Law Commission of Canada, in a 2004 report, "Voting Counts."
There are 23 recommendations in total (see PDF), chief of which are for:
A mixed member proportional system (MMP), with two thirds of the MPs elected as usual with first-past-the-post, one third from provincial or territorial lists;
Voters would have two votes: one for the usual riding MP, one for the list; voters should have the option of voting for the list provided by the parties, or indicate a preference among candidates on the list.
Several recommendations require the parties to promote equal representation let of women, and greater representation of minorities and youth.
Consultation with First Nations, Métis and Inuit peoples is recommended to promote greater aboriginal representation.
After draft legislation is drawn up, there should be broad public consultation, with the possibility of a referendum.
The full report, together with rationale for the recommendations, and lots of background on MMP's use in other countries, is available online at http://publications.gc.ca/collections/Collection/J31-61-2004E.pdf