Populism marks a departure from the central forms of democratic governance over the past two centuries. As opposed to the primacy of the legislative branch and of institutional actors, most notably political parties, populism tends toward the unilateral authority of a charismatic leader, ruling on the basis of an electoral mandate. This article starts from an understanding of populism as being grounded in political mobilization in disregard of the institutions of governance. Even more centrally, populist leaders try to dismantle institutional constraints to allow for greater individual discretionary power. This article looks to legal vulnerabilities that might allow the institutional framework of democracy to withstand the new populist assault. [---]