I think the key is to start from a welfare state that is the same size as the Basic Income system. That is, you have a tax funded system that pays for paternal leave, pensions, unemployment benefits, daycare subsidies, food stamps, and all other types of transfers.<p><i>After</i> that you make a transition to a basic income system, with a very small change in total transfers (e.g. 0-20%). This is exactly what would happen in for example Finland, where proposals have pretty wide political support now.