Hume's theory of government and allegiance falls into two parts. In its better known segment Hume explains the conjectural origin of government in general as a convention necessary to enforce the rules of justice and provide other public goods, and he grounds the general duty of allegiance on the utility of government in making stable social life possible. To his credit, however, Hume goes on to give separate treatment to the topic of what he terms the ‘objects of allegiance”, or rules for assessing the legitimacy of particular political regimes or rulers. Given the general desirability of government and of obedience to it, we might nevertheless ask what entitles the particular government in existence to rule over us; more pressingly, there might be competing claimants to this position. What standards should guide our decision about where our allegiance is due when there is more than one alternative?