Polity5 / INSCR data (Center for Systemic Peace)

Polity5 / INSCR data (Center for Systemic Peace)

The Center for Systemic Peace's INSCR data page distributes the Polity5 regime-authority dataset plus related series: Major Episodes of Political Violence, the PITF State Failure Problem Set, High Casualty Terrorist Bombings, Coups d'Etat, the State Fragility Index and Matrix, and country-specific India series. Files are SPSS and Excel with PDF codebooks; no key is needed.

Coverage

Polity5 (Political Regime Characteristics and Transitions) covers 1800-2018 in annual and polity-case formats for all independent countries with population over 500,000 in 2018 (167 countries in 2018); the page notes Polity5 refined data mainly covers 1946-2018, with 1800-1945 carried over from Polity IV values. Related series cover different windows: Major Episodes of Political Violence 1946-2018, the PITF State Failure Problem Set 1955-2018, High Casualty Terrorist Bombings 1989-2021 (1409 cases), Coups d'Etat 1946-2021, and the State Fragility Index and Matrix 1995-2018 for the same 167 countries. Update frequency: Not stated.

Verdict

Use this for regime-authority scores, political-violence episodes, coups and state-fragility indices for all independent countries with populations greater than 500,000 in 2018 (167 countries in 2018). The page says: "All resources listed on this page are copyrighted by the Center for Systemic Peace. Use of any of these resources in published work must provide proper citation. Reproduction or redistribution of these resources, or substantial portions thereof, is prohibited without prior, written permission from the Center for Systemic Peace; contact information is provided on the CSP Contact Page." Signal Lab links only, consistent with that restriction.