Why are some institutions quickly replaced while others endure for more than a century? Majority cycling over institutions is theoretically unavoidable, but politics provides few opportunities to study it empirically. Using data on state constitutional characteristics and legislative composition from 1834 to 2012, this article advances the theory that institutions are more likely to be endogenously replaced when the society of actors differs from the time of enactment, and that institutional characteristics can exacerbate or mitigate these risks. Results show that political change interacts with institutional particularism to preserve or undermine state constitutions. More particularistic constitutions have shorter life spans because they are more vulnerable to changes in the political environment.