Nationalization, the belief that the government should occasionally seize control of private enterprise to better serve the "public good," isn't an idea with much traction in Canadian politics these days -- despite the NDP's best efforts. If there's any Canadian industry crying out for nationalization, it's political parties. Unlike General Motors or CIBC, they have literally no reason to exist beyond serving the public interest. We need parties to form governments in our parliamentary system, and they provide the lifeblood of choice in elections. Is there a downside to nationalization?