This chapter sets out the concepts and approach followed in the book. It introduces the reader to the concept of popular support, establishes key lines of inquiry and sets out its contribution by situating it within the broader study of German politics. A key part of this concerns how popular support has been approached in large-scale comparative studies. These studies contain a number of deficiencies, including a lack of sensitivity to the defining concepts and institutional configuration of the German model of democracy. By omitting these important aspects, doubt surrounds the findings and necessitates a fresh inquiry. The study thus identifies a more sensitive set of survey indicators and shows how the subject may be more fruitfully approached in the remainder of the book. Finally, it sets out the chapter division and summarises the principal findings.