Based on where a painter places her easel, the same landscape will be represented differently. Some objects will appear distant and blurred, others close up and colourful. The sun will light up the sky in a particular and unique way at any given time, so that the very same object may seem different on another day or from another perspective. For an impressionist painter, reality would be represented as a series of broken brush strokes, whereas a Renaissance Florentine painter would emphasize lines and devote time to the geometric construction of the painting. This can be applied as a metaphor for change and stability: according to a researcher’s chosen perspective, she may place greater emphasis on elements that vary, or on those that remain the same, she may pay greater attention to particular details, or focus more on general impressions, so that what she sees as reality is, in fact, only a particular perspective. To understand how conceptions of reality become crystallized within particular research perspectives, it is useful to draw a parallel between party system change and institutional change before presenting the topic of this book: institutional engineering in Western Europe during the last two decades....