Sovereign and Representative

One well-recognized distinction between Hobbes' and Locke's Political Philosophies is that the former, but not the latter, conceives the State of Nature as a condition of universal conflict.  Another distinction, less well-recognized, but perhaps as significant, is that between Sovereign and Representative.  While Hobbes' Sovereign-Citizen power relation is downward, that of Locke's Citizen-Representative is the inverse, so Locke diverges further from Medieval hierarchy than does Hobbes.  Now, a parallel between that concept of Locke's with his Epistemological theory can be noted, but with one difference.  Representation is derivative in both cases, though, while the Epistemological one is a mere abstraction from the multiplicity of its represented, the Political representative, is, like those represented, a concrete individual entity.