I don't see why we need multiple polls for the same topic. It's a question that is asked point in time, that is always going to be inaccurate as people then go out and crash into teenagers turning in front of them.
The fix is a mod that would allow people to change their votes. I haven't found one yet, but I have seen a vbulletin forum where the function was enabled, so perhaps this will encourage me to look harder.