Published 2026
| Version v4
Comparative Constitution Project Data
Description
Description
The Comparative Constitutions Project (CCP) Database is the most comprehensive, longitudinal collection of constitutional texts and coded provisions for every sovereign state from 1789 to the present, compiled by the Comparative Constitutions Project since 2005. It includes full verbatim constitutions, standardized variable codings of institutional and rights‑related provisions, and metadata on adoption dates, amendments, and historical context, enabling rigorous cross‑national analysis of constitutional design and its outcomes.
The datasets are actively maintained and updated yearly.
Details
| Resource type | Open dataset |
| Title | Comparative Constitution Project Data |
| Alternative title | CCP |
| Creators |
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| Publisher | Comparative Constitutions Project |
| Year of publication | 2026 |
| External resource | https://comparativeconstitutionsproject.org/download-data/ |
| Related works |
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Variables
| Name | Description |
|---|---|
| COWCODE | Correlates of War country code (correlatesofwar.org). |
| COUNTRY | Country name |
| YEAR | Year |
| SYST | Identifies new constitutional systems. 0. No new constitutional system 1. New constitutional system |
| SYSTID | Unique identification number for the constitutional system |
| SYSTYEAR | Year in which the constitutional system was promulgated |
| EVNT | Identifies constitutional events. 0. No constitutional event 1. Constitutional event |
| EVNTID | Unique identification number for the constitutional event |
| EVNTYEAR | Year of promulgation of the most recent constitutional event |
| EVNTTYPE | Type of constitutional event (if any) (1-7, see codebook) |
| WG | Indicates whether the observation is part of the Ward and Gleditsch sample |
| -Coding and Sampling Variables- | For a list of all Coding and Sampling Variables see codebook |