It was implied that the number of nobles eligible to run for positions and able to vote in Terran is quite small, so it was logical for the Dev team to assume it might be the case that he would be the only eligible candidate. If he keeps vacating a Lordship then a new vote is called so it is feasible (depending on real noble numbers) to keep that new lord tag for quite some time.
The only (or nearly) eligible candidates are lords of other regions, who, if they win, vacate another region, starting another election.
With a careful enough game of musical chairs, yes, we can keep him locked in Vassar until the protection wears off. It's just annoying.
