should robots that pass the turing test should be allowed to vote?

Taken literally, I'd say no because the Turing test isn't strong enough.   But if we are less literal, the issue is wheher sufficiently sophiticated artificial entities should be granted at least some 'human rights'.

I'd guess we are at least 100 years from producing artificial entities that would require more consideration than toasters or vacuum cleaners, but perhapsitsnot too early to begin the debate.

My view at this stage is to bear in mind a famous quote by Jeremy Bentham (1748-1832):

Bentham was referring to animals, but I think his principle applies equally well to artificial enties (and foetuses, but that's a different debate!)

Step 1, create sufficiently human like robot.

Step 2, sufficiently human like robot suffrage

Step 3, mass produce voting robots

Step 4, profit

Probably not.

Hopefully by the time we're facing that question, we'll have a properly configured government that doesn't require democratic interference.

Yes... I note my post was written as if the OP was about 'human rights' more generally, not just than just voting.