Has anyone attempted to make a working voting system using a bitcoin based system? It occurred to me the other day that the difficult problem of electronic voting could possibly be solved quite nicely using a bitcoin system. I believe it's transparent enough to be trusted. I found a few threads discussing this already.

Has any work been done in this area yet? I think it's worth investigating.

Some threads I seen are here and here
The bitcoin concept has no method to limit anything to a single entity.  I am one person yet on bitcon network I have multiple addresses,  I have multiple wallets which contain multiple addresses, I make up multiple nodes, I have multiple rigs with multiple GPU each, I use multiple IP addresses.

Everything about the bitcon network was designed to allow such a scenario to take place.  evoting requires multiple concepts which are incompatible with current bitcoin network

1) authenticate the person voting (is this person a valid registered voter).
2) keep the authenticated person anonymous.
3) ensure votes can't be duplicated
4) ensure vote count is public, verifiable, and immune to abuse by central authority

eVoting not be solved "easily" by bitcoin network.  I would say eVoating can't be solved "easily" period.  There are some very non-trivial issues with the combination of the above requirements.  

The bitcoin network doesn't help to ensure that any of the 4 principles above are met.