Ongoing effort at the University of Michigan to study and explore the conditions associated with the outbreak of war, as well as with the conditions surrounding militarized disputes. Site features a variety of data sets as well as history, bibliography, and links to other sources.

Provides access to an extensive collection of downloadable data. While some data is only available to individuals from member institutions, an extensive collection of criminal justice data, election data, and data from the General Social Surveys is available to the public from this site.

The Data Archive was set up in 1967 in order to retain the most significant machine-readable data from the research which it funds. Thus crucial data can be re-analysed by other researchers, and the money spent on research becomes not only an immediate outlay, but an investment for the future.

A research collection of district level election results and statistics for approximately 350 national legislative elections in 26 countries. Catalog and some online datasets, plus project history, reviews, publications, and links. Housed at the University of California, San Diego.

Site lists international and domestic resources for data sets. Data subjects range from confliict and cooperation to environmental topics.

This data set is version 1.1 of Katherine Barbieri's national and dyadic trade data, which covers the period 1870-1992.

Political Handbook of the World is an annual reference book containing separate sections on every country in the world and more than 100 intergovernmental organizations, such as NATO, OPEC, and UN affiliates. Each edition completely updates political developments over the past year while retaining the extensive background information necessary for researchers to place current events in a comprehensive historical perspective.

Social science data online: conflict, aggression, violence and wars; study descriptions and numeric data.

This is the data set compiled by Adam Przeworski, Michael Alverez et al. and used in their book "Democracy and Development".

Jane's IntelWeb helps you monitor developments in terrorist and intelligence activity worldwide.