Also see the Mannheim Eurobarometer Trend File and Eurobarometer Question Search, which allows you to find if and when a topic was covered. Also includes a topical guide. Data is available through ICPSR and 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).
NOTE: These selected sources are specific to Immigration. Please see the Polls and Public Opinion guide for additional sources of public opinion, polls and surveys.