This is the elephant in the room in the upcoming election. The Liberals are in government, so we know what they have done and will do. The NDP are a little vague on this and seem to want to avoid saying what they might do until after the election; or, they don't know what they would do. The Green Party seems to have taken a stronger and more left leaning policy position, although they probably won't form government, so they have more room to make aggressive suggestions.  A viable solution is probably a mix of the three, but moving towards the Green's position, until the public says no further.