They aren't filtering by state, nor are they preventing multiple voting. They really have no guaranteed way of verifying. The pole is totally bogus, IMO.
However, based on the listed cities, they are probably doing that filtering based on IP address
I agree that the data is pretty bogus, but they are apparently filtering by state somehow since they break the data down by state, and selected city. However, based on the listed cities, they are probably doing that filtering based on IP address since the cities mentioned are some of the main router points in the country. I started to take the poll to get a feel for what was going on and it really isn't a good poll at all. Too many opportunities for misunderstood responses and poor answers.
Read the FAQs..... http://www.isidewith.com/faqs/
How do you prevent tampering and duplicate submissions in your results map and state-by-state results?We don't publish how we prevent tampering, but we have sophisticated measures in place for finding and discarding tampered or duplicate submissions.