Ballot Secrecy in Britain
By DaveLevy on May 08, 2005
This is, I believe, to permit court supervised remediation if significant impersonation is suspected. What Robin, didn't say is that no ID is required to vote, you only have to assert your identity (Remeber this if you loose your polling card). If someone else has claimed your vote before you, then you will be given a pink ballot paper and your vote counted. Counting staff and the candidate counting agents can easily see if there are large numbers of duplicate votes.
On the other hand, lets see how someone could find out how you voted. They'd need the electoral register, (this is easy, its a public document), the counterfoils and ballot papers (these are kept in secure places which they'd need a court order to legally access). The electoral count does not sort the ballot papers, and the ballot paper was given to you when you turned up. Does your electoral stalker know when you voted? Otherwise, they'll have to inspect all thirty to forty thousand counterfoils until they find yours. Even if they knew when you voted, they don't know at what time of the day each numbered counterfoil was detatched from the ballot paper. So again in order to find your counterfoil they'll then have to inspect all of them. Having found your counterfoil, they'll need to inspect all thirty or forty thousand ballot papers to discover the vote; these are not sorted either. Once they have successfully done all this, they still don't know if it was you that cast that vote.
I think our vote is more anonymous, and more auditable than if we used computers.