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Many authors agree that the President of the Italian Republic is the head of state with the widest powers among parliamentary governments in Europe. Although several studies have sought to explain Why the President's power may increase or decrease, a quantitative measurement of the phenomenon-able to answer questions also about the Who (the actors), How (the modalities) and How much (the consistency) of the phenomenon itself-has seldom been carried out by scholars. This paper seeks to answer these unanswered substantive questions by measuring the potential power of the Italian head of state in a crucial case-the first Presidency of Giorgio Napolitano (2006Napolitano ( -2013-by means of a quantitative narrative analysis (QNA) and a social network analysis of his Diary. This is done in a semiautomated way by using natural language processing (NLP) techniques, including regular expressions and named-entity recognition. As regards the methodological contribution of the paper, its aim is to demonstrate that QNA with NLP tools for semi-automated analysis of textual data can be considered an effective and reliable methodology for the empirical investigation of potential power, enabling a more widespread application of this technique in the quantitative analysis of topics related to the power approach-that some scholars consider otherwise obsolete-also at the comparative level.

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In this paper, we address the topic of policy actorness in Italian foreign policy to characterize the understudied role of the President of the Italian Republic (PoR). We apply quantitative narrative analysis (QNA) as the methodological tool of our study, answering two research questions to which the academic literature has so far produced limited responses: (a) whether the PoR can be considered a relevant actor in Italian foreign policy and (b) which factors can affect the Italian PoR’s relevance in foreign policy. Considering the Italian PoR’s Diary as the unit of analysis and source of data, we study the two crucial cases of Ciampi’s presidency (1999–2006) and Napolitano’s first presidency (2006–2013). QNA allows us to quantify and compare, while maintaining an actor-centred approach, the relations of the two PoRs with the most relevant actors in foreign policy. The results of our analyses highlight the relevance of the Italian PoR figure, identifying the main areas of influence of the Italian head of state and their changes over time. We conclude providing a few hypotheses to interpret the outcomes of our analyses on the PoR’s role in Italian foreign policy.