It is often said that effective government requires a concentration of power. If we want our political leaders to adjust public policies to changing economic, social, and political circumstances, we should, in this view, leave our leaders alone: we should put in place electoral procedures that identify a clear winner in each election, and then we should let the winning political party govern without having to cooperate with others.
The argument of this book is that this view is mistaken, since it seriously underestimates the ability of political decision makers to overcome democratic...