"Identifies all politically relevant ethnic groups and their level of access to state power for all countries of the world from 1946-2017." "Provides data on ethnic groups’ access to state power, their settlement patterns, links to rebel organizations, transborder ethnic kin relations, and intraethnic cleavages."
"Tracks 284 politically-active ethnic groups throughout the world from 1945 to the present -- identifying where they are, what they do, and what happens to them. MAR focuses specifically on ethnopolitical groups, non-state communal groups that have 'political significance' in the contemporary world because of their status and political actions."
"A set of time-varying measures that gauge the nature and depth of country-specific socio-cultural cleavages. It [focuses] on 165 of the largest countries in the world (all countries with a population above 500,000 in 2004) during the post-WWII era to create country-specific projections on the relative sizes of the different groups during the postwar era.
"Contains an ethnic fractionalization index for 165 countries across all continents. The dataset covers annually the period 1945-2013. The ethnic fractionalization index corresponds to the probability that two randomly drawn individuals within a country are not from the same ethnic group. The new dataset is a natural extension of previous ethnic fractionalization indices and it allows its users to compare developments in ethnic fractionalization over time. The applications of HIEF pertain to the pattern of ethnic diversity across countries and over time."
"Measures the extent of government religion policy for 183 states and independent on a yearly basis between 1990 and 2014." Includes variables such as official religion, religious support, religious restrictions, religious discrimination, societal discrimination, and minority societal actions.
"Seeks to promote a deeper understanding of issues at the intersection of religion and public affairs." Allows download of datasets two years after each report is issued. Requires a free account, and download instructions are available here: https://www.pewresearch.org/fact-tank/2018/03/09/how-to-access-pew-research-center-survey-data/.
"Contains information on the use of electoral gender quotas for promoting the equal representation of women. In this project, electoral gender quotas are defined as mandatory or targeted percentages of candidates for public elections."