Abstract: This chapter treats the form of authoritarian constitutionalism prevalent in Europe and the Western Hemisphere as an ideology, in the weak sense, an amalgam of tropes and rhetorics that allude to or evoke in an incoherent way two authoritarian traditions: a reactionary Catholic one and a fascist one. The ideology is one of the factors guiding legal interventions in liberal democratic constitutional orders that are also internally incoherent. Incoherence, along with the existence of conservative and progressive factions within the liberal democratic camp, creates multiple occasions for a hermeneutic of suspicion with respect to contemporary constitutional argument. In this situation, decision among legal alternatives requires a politics. As an example, even “court packing,” which is usually treated as a priori authoritarian, may in some circumstances be legally and politically justified in a liberal democratic framework. This approach contrasts with one that treats authoritarianism either as a coherent ideology or as signifying merely violation of liberal democratic norms.