In an era of devolution in much social policy, many initiatives seek to improve child, youth, and family well-being through locally-governed, data-driven partnerships. These partnerships are not limited to savvy technical reform of policies or programs. They target a change in political will, policy agendas, and policy implementation arrangements, all driven by broad and sustained local movements on behalf of children. Part of a larger project on how community problem solving is evolving worldwide, this paper critically examines what such locally-based efforts actually do, noting the key strategic challenges they confront. It emphasizes the distinct dimensions of political work implied in an era of partnership-driven problem solving, explores the roles of coalition building in local politics, and analyzes the special challenges that partnerships face when they are, at once, interest-driven coalitions that ensure political support and operational alliances through which players seek to jointly produce the better outcomes they seek. Special attention is given to the roles of intermediary players that help other players navigate these challenges and to the multiple demands made of grassroots and elite stakeholders. (Contains 80 references.) (Author/SM)