In reply to john arran:
> but my point was that cases of impersonation don't seem to happen, so this appears not to be a suitable response to an identified problem.
In the UK it's called Personation , not impersonation.
But your reasoning is completely false here because the problem isn't people taking votes off people who subsequently try to vote.
It's an extremely well known problem, as reported for several years.
ex-Respecter Salma Yaqoob identified it as a problem in muslim communities in Birmingham, which prompted Barrenness Warsi to identify Hindu and Sikh cases to show that it wasn't a uniquely muslim problem (although it may predominantly be muslim, given that George Galloway made the same point in Bradford, Tower Hamlets, well what a mess).
It's largely a cultural thing, North European Protestantism says obey the law because it is the law, Catholic, Muslim cultures much more have the attitude that if you fake contrition you can ask for forgiveness.
That doesn't mean that personation is the only issue, the roll of course, postal votes, baradari block voting, all practices imported from countries where fraud and corruption are a way of life rather than criminal priorities.