The biggest problem with voting systems (online or otherwise) is absolute secrecy. If you give up on this requirement, which I believe is antiquated [0], you ca

The biggest problem with voting systems (online or otherwise) is absolute secrecy. If you give up on this requirement, which I believe is antiquated [0], you can easily come up with a system where most fraud could be fixed and punished. You can have reasonable privacy, but you have to have the ability to audit votes if need be. A system in which all votes are fungible after a certain point only encourages fraud. As long as you execute it well you can have a high degree of certainty that you won't be punished. [0] First, behind this requirement is the premise that political repression is to be expected. I'm sure that's true in some places, but you want to fix this in other ways. Second, you already don't have perfect secrecy in many systems and people don't seem to mind.