It has been frequently argued that democracy is protected and realized under constitutions that protect certain rights and establish the conditions for a functioning representative democracy. However, some democrats still find something profoundly unsettling about contemporary constitutional regimes. The participation of ordinary citizens in constitutional change in the world's most "advanced" democracies (such as the United States, Canada, and the United Kingdom) is weak at best: the power of constitutional reform usually lies in the exclusive hands of legislatures. How can constitutions...