CCP Data

Comprehensive datasets on constitutional events, characteristics, and research replication

Phase I

Constitutional Chronology

Version 5.0

Chronology of Constitutional Events

Comprehensive timeline of constitutional changes worldwide since 1789.

🕒 Updated through 2023
Suggested Citation
Elkins, Zachary and Tom Ginsburg. 2023. “Chronology of Constitutional Events, Version 5.0.” Comparative Constitutions Project.
Phase III

Constitutional Characteristics

Version 5.0

Characteristics of National Constitutions

Comprehensive data covering 200+ countries’ constitutional features.

🕒 Last modified: February 2025
Suggested Citation
Elkins, Zachary and Tom Ginsburg. 2025 “Characteristics of National Constitutions, Version 5.0.” Comparative Constitutions Project.
Research

Replication Data

18 datasets

Datasets to replicate research performed using CCP data across multiple studies and time periods.

The Law of the Sea and Democracy (2022) Study | Data
Democracies and International Law (2021) Study | Data
The Bound Executive (2021) Study | Data
How to Save A Constitutional Democracy (2018) Study | Data
Does the Constitutional Amendment Rule Matter at All? (2015) Study | Data
Constitutional Islamization and Human Rights (2014) Study | Data
Constitutions and Election Management (2014) Study | Data
Does De Jure Judicial Independence Really Matter? (2014) Study | Data
Beyond Presidentialism and Parliamentarism (2013) Study | Data
The Content of Authoritarian Constitutions (2013) Study | Data
When to Overthrow Your Government (2013) Study | Data
Why Do Countries Adopt Constitutional Review (2013) Study | Data
Comments on Law and Versteeg (2012) Study | Data
On the Interpretability of Law (2012) Study | Data
Deciding Not to Decide (2011) Study | Data
On the Evasion of Executive Term Limits (2011) Study | Data
The Endurance of National Constitutions (2009) Study | Data
Constitution Making in Occupied States (2008) Study | Data

Although we have gathered the texts for nearly every constitutional event since 1789, only a small percentage of these are not under copyright restrictions. However, nearly all of the world’s currently active constitutions are available on our site Constitute.