Large set of surveys measuring public opinion in the countries of the European Union, on a wide variety of topics. Also see the Mannheim Eurobarometer Trend File. Eurobarometer Question and Variable Search allows one to find if and when a topic was covered on the Eurobarometer surveys. Also includes a topical guide. Also see GESIS-ZACAT which includes a large number of EuroBarometer surveys and others and allows online analysis as well as access to microdatafiles (free registration is required). Many have NUTS 1, 2, and sometimes 3 regions.