V-Dem Institute
The V-Dem Institute (Varieties of Democracy) is an independent research institute founded by Professor Staffan I. Lindberg in 2014 and is funded by a number of government organizations, World Bank and several research institutions.The headquarters of the project is based at the department of political science, University of Gothenburg, Sweden.

Varieties of Democracy is a new approach to conceptualizing and measuring democracy around the world. The V-Dem project distinguishes among five high-level principles of democracy: electoral, liberal, participatory, deliberative, and egalitarian, and collects data to measure these principles.

The dataset is updated, expanded, and released every year. Based on the current data, V-Dem publishes an annual Democracy Report that describes the state of democracy in the world.
The Democracy Report, the dataset, scientific articles, and working papers are free to download on the institute’s website that also features interactive graphic tools.

The V-Dem Institute's measures of democracy are the most elaborate and granular among several democracy indexes (such as the Polity data series and Freedom House's "Freedom in the World"). By 2020, the V-Dem index had "more than 470 indicators, 82 mid-level indices, and 5 high-level indices covering 202 polities from the period of 1789–2019." Each indicator is coded independently by at least five country experts. V-Dem uses methodological tools to deal with rating reliability and confidence intervals in the expert ratings. Political scientist Daniel Hegedus describes V-Dem as "as the most important provider of quantitative democracy data for scholarly research."
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Staffan I. Lindberg
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democracy
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Polity data series
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Freedom House
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Freedom in the World
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V-Dem Institute
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V-Dem Institute
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