One thing that the previous STV code had was that if the code running the election itself was changed, it invalidated the running election. This was to prevent someone from changing the software (say, by silently dropping 'AC' from the counts) during the election in order to change the election.
Again, there is some limit to how much we can really do things: even the previous could be circumvented if one was root after all. But it Good to do what we can, imho.
