> this kind of "literacy test"

Where did I mention a "literacy test"? I'm against such tests for exactly the same reasons I'm against prisoner voting.

> If prisoners can't vote, what's stopping the party in power from preventing them from ever losing an election by just jailing everyone expected to vote against them?

Prisons, by definition, are built on the principle that prisoners are under the full control of prison administrations. If everyone who will vote against could be imprisoned, there would be no problem allowing prisoners to vote: prisoners would still vote in the manner desired by the prison administration. That's how prisons work. And I don't think there's a need to increase incentives for authorities to imprison more people to achieve the desired election results through prisoners' voting.

> any kind of tech company with any government contract.

Obviously, this shouldn't apply to "any" government contracts. But if the majority of a contractor's income comes from government contracts, then yes, employees shouldn't vote.

> Anyone living in a state which receives more money than it contributes in taxes should be banned from voting. Anyone using government resources should be banned from voting.

I don't understand why you're trying to reduce this argument to absurdity. The goal is to preserve democracy by reducing the government's ability to build a totalitarian dictatorship through its ability to control taxes. And yet you're proposing measures that would proclaim such a dictatorship.