The direct PM election and the institutional presidentialisation of parliamentary systems

The direct PM election model features as an ‘empty cell’ in typologies of political regimes. A more fine grained analysis of the model shows that it depends on the choices made on three institutional parameters (object of the election, electoral system, legislative/executive relationship) whether it constitutes a distinct regime type. A comparison of nine examples confirms that the label of a direct PM election covers a wide array of institutional designs. A direct PM election may involve a full-fledged presidentialisation, but it may also imply a marginal adaptation of the parliamentary system. The model can only be considered as an intermediate regime type when it combines the exclusive electoral origin of the executive with a parliamentary legislative/executive relationship.