A BIG issue with Straw Polls is VPN abuse. Even me, I have a friend who does this with the sole intention of ruining a poll. They will vote, use a VPN to change their IP, then vote again. In an 8 person community, there could be 50 votes for a single silly poll answer. Maybe a way to solve this would be to allow multiple "Duplication Checking" options? So it checks for IP AND Browser cookies, or maybe add some further "Duplication Checking" options, if even possible.
Help fight VPN abuse!