Cities are the most ancient political institutions, dating back thousands of year-- and they have reemerged as the nation-states of our time. Mayors are accountable to their voters to a greater degree than any other elected officials. Emanuel, himself a two-term mayor of Chicago, illuminates how progressives and centrists alike can best accomplish their goals by focusing their energies on local politics. He provides examples to show how cities are improving education, infrastructure, job conditions, and environmental policy at a local level. -- adapted from jacket