CHES Interactive - Chapel Hill Expert SurveyThe Chapel Hill expert surveys estimate party positioning on European integration, ideology and policy issues for national parties in a variety of European countries. Questions on parties' general position on European integration, several EU policies, general left/right, economic left/right, and social left/right are common to all surveys. More recent surveys also contain questions on non-EU policy issues, such as anti-elite rhetoric, immigration, redistribution, decentralization, and environmental policy.