Party Politics, Ahead of Print.
The party affiliation of cabinet ministers is a critical but neglected notion. While its application and theoretical centrality is indisputable in many research fields, explicit definitions are difficult to find, while operationalizations tend to rely on rudimentary categorizations. Departing from formulating a definition consistent with the party government model, we propose a flexible typology to categorize and rank variants of partisans both within and beyond consolidated parliamentary democracies. We show that the new approach can capture important unobserved dynamics well.