I had problems with my spinner at first. However, this is one of the things that is really annoying about using captchas instead of passwords.
It is possible to create a secure account for something useless without using the system and you probably won't get spammers anymore.
What a dumb idea, you would want to implement it yourself, because the people working and maintaining the system(s) will all have some way of doing that already.
I don't know how much the government can take away from a site like this as well. But it's a bit like trying to ban a kid because the kid got an old friend on their facebook because his parents were "bad".
So, even though you have a big idea about voting systems, it would be a better option to require a system that only exists to be able to be used for good reasons.