Abstract The article distinguishes federal states from bicameralism and mechanisms of territorial representation in order to examine the association of each with institutional change in 32 countries by using constitutional amendments as a proxy. It reveals that bicameralism tends to be a better predictor of constitutional stability than federalism. All of the bicameral cases that are associated with high rates of constitutional amendment are also federal states, including Brazil, India, Austria, and Malaysia. In order to explore the mechanisms explaining […]