[nickff]

I like the idea very much, and have a suggestion for you, if you are trying to be non-partisan, as indicated by your comment. I think you should change some of the colour scheme on the website, especially on the won/lost bar, because using red to denote loss, and blue to denote winning makes it seem like you are 'siding' with the democratic party. You might also want to change the colour of the banner, and possibly hide the number of votes for each side on incomplete polls, so as not to make users feel like part of a small minority who participates (which would be discouraging), unless there are a large number of voters.

Disclosure: I am a Canadian with no interest in US internal politics, and would just like to see this kind of site succeed.