No. All computers, working with the same logical system, would have the same vote. Either that, or it would depend on the bias of the programmer.
Computers would only get the right to vote if they could function like people, which sounds kind of like sci-fi, so probably not. I doubt that the government would ever recognize them as citizens, either.
Right. No computer has an independent mind or is affected by political reality in the way that humans are. If computers are recognized as citizens, it's because computers ARE the government. Also, a computer is not self-interested and would be unlikely to petition for its own right to vote.
Right, and it would also have a lot to do with the computer's programming. It would only be interested in government if it was programmed to be.
I suppose that if computers became intelligent enough to realize that they would make far more logical decisions than human voters, they might attempt a takeover. If their logic tended toward saving as many lives as possible, for example, they would obviously opt for the most extreme form of authoritarianism. But how do you assign values for life, freedom, etc. into a computer? That's really what all politics is about. Weighing the benefits of freedom vs. its risk to safety.
True. It would be very difficult to teach a computer enough about emotion and empathy to be able to effectively run a democracy. The risks would probably outweigh the benefits.