Well, the built in poll widget continues to malfunction, so I've done a bit of research and switched over to another service.
The Blogger forums speak highly of Polldaddy, which I was considering using, however it requires you to set up a Wordpress account to access it.
So I've gone with a site called BlogPolls, which doesn't require an account, but which does give you some very helpful stats if you do create an account.
I might end up trying a few other services before settling down on one, but for the Ishoo Atey-For poll, this is the one I will use.
Of course, this means all of you will now need to vote again...