When we speak of government, we refer to the various technical and bureaucratic means by which policies and plans are delivered. Government involves officials, data-gathering, regulating and evaluating. As a governmental issue, Brexit involves prosaic problems such as how to get trucks through ports. Sovereignty, on the other hand, is always an abstract notion of where power ultimately lies, albeit an abstraction that modern states depend on if they’re to command obedience. As a sovereign issue, Brexit involves bravado appeals to “the people” and “the nation.” These are two incommensurable ideas of what power consists of, although any effective state must have both at its disposal.
One way to understand the rise of reactionary populism today is as the revenge of sovereignty on government. This is not simply a backlash after decades of globalization, but against the form of political power that facilitated it, which is technocratic, multilateral and increasingly divorced from local identities.
A common thread linking “hard” Brexiteers to nationalists across the globe is that they resent the very idea of governing as a complex, modern, fact-based set of activities that requires technical expertise and permanent officials.