http://www.freedomhouse.org/report-types/freedom-world#.VAC54GORNbI

The most recent Freedom House annual report on Freedom in the World.

https://www.bti-project.org/en/home/

The link to the most recent Bertelsmann Transformation Index.

http://www.eiu.com/public/topical_report.aspx?campaignid=DemocracyIndex12

The most recent Economist Intelligence Unit Democracy Index freely available.

http://www.systemicpeace.org/polity/polity4.htm

The Polity IV database.

http://www.idea.int/

The general international IDEA website.