Topics Protection from ex post facto laws

Constitute topics are built from the variables in the Comparative Constitutions Project’s dataset, which captures the content of world constitutions. The particular variables relevant to this topic are listed below, in the form of survey questions.

More information about the CCP’s research design is available here, including background information on how the team designed the inventory of constitutional topics as well as the full coding survey


Protects individuals from prosecution for acts that were not criminal at the time that they were committed, or from changes in the penalties for acts.


Rights and Duties


accused; criminal procedure; rule of law

Survey Questions

  • Does the constitution prohibit punishment by laws enacted ex post facto?