Continuous items for most waves: watching tv / reading newspaper / taking part in discussions on political issues / political knowledge / political participation / party preference / questions concerning importance of different political issues / left and right in politics. Voting for European Parliament, common market, importance of European Parliament / limitation of nuclear arms by Soviet-Union and NATO / watching tv-series, statements on different tv-programs / what are important matters in life. Background variables: basic characteristics/ residence/ household characteristics/ occupation/employment/ income/capital assets/ education/ social class/ politics/ religion