The Historical Varieties of Democracy Dataset (Historical V-Dem) is a new dataset containing about 260 indicators, both factual and evaluative, describing various aspects of political regimes and state institutions. The dataset covers 91 polities globally – including most large, sovereign...

Most studies of democratic developments are limited to the period after World War II. However, political regimes varied according to different aspects of democracy long before the establishment of modern liberal mass democracies. We come down strongly in favor of collecting disaggregate and...