Varieties of Democracy (V-Dem)
A collaboration among more than 50 scholars worldwide and drawing on 2,500 Country Experts, V-Dem provides multiple indices of democracy grouped according to 7 high-level Principles of Democracy: electoral, liberal, participatory, majoritarian, consensual, deliberative, and egalitarian. V-Dem breaks these high-level categories down into dozens of lower-level Components of Democracy, such as regular elections, judicial independence, direct democracy, and gender equality, and provides more than 350 disaggregated indicators for each. Covers all countries (and some dependent territories) from 1900 to the present and provides an estimate of measurement reliability for each rating. Data in multiple formats.