For the first time in a long time, the federal NDP has a leader with an intimate knowledge of urban issues, in an electoral map that could see the NDP grow tremendously in Vancouver, Victoria, Toronto, Winnipeg, Hamilton, Ottawa, and other urban centres. If Layton is a "Toronto first" leader, I'm not convinced there's much ground to be had. But if he runs with the awareness that rural / agrarian issues have to become secondary to urban ones (in general) in an increasingly progressive and urbanized Canada, then I think there's a lot of room for growth.