The Political Constraint Index (POLCON) Dataset政治约束指数（POLCON）数据集

Developed by Witold J. Henisz and Bennet A. Zelner (2025 release), the POLCON dataset is a widely‑used cross‑national time‑series dataset for institutional political‑risk research. Drawing on veto‑player theory, it measures institutional barriers to unilateral policy change with scores ranging from 0 to 1, where higher values mean stronger checks and more credible policy commitments. Covering countries from 1800‑2025, it provides composite constraint indices together with underlying institutional variables to support comparative and longitudinal analysis.

政治约束指数（POLCON）数据集由 Witold J. Henisz、Bennet A. Zelner 开发（2025 版），是政治风险研究中常用的跨国时序数据集。基于否决玩家理论，数据集测算单方面修改政策的制度阻力，指数取值 0‑1，分数越高代表制度制衡越强、政策承诺可信度越高。数据覆盖 1800‑2025 年多国年度观测，提供综合约束指标及配套制度变量，支持跨国比较与长时序分析。