A basic tool set for a generalized directional model.

In political science, there are two classes of spatial models: those which are based on a distance logic and those which are based on a directional logic. This distinction can be found in terms of diverse topics, as voting theory, coalition theory or legislative politics. While Tsebelis (Br. J. Political Sci. 25:289–325, ) among others discussed implications of distance models, the respective counterparts for directional models have not been explicitly derived in the existing literature. We try to close this gap by discussing discrepancies between both kinds of models and derive some of the most relevant tools for analyses based on directional models. [ABSTRACT FROM AUTHOR]