I would try and add a bigger twist to standard x vs y poll to separate yourself. The basic concept has been done many times before, without massive success.

USvsTHEM (http://usvsthem.com) is a site that I co-created - and still very early alpha; but adds a twist that centers a debate around people and their network of support. There is no browse-able stream yet, as the alpha release was meant to test the social utility.

Good Luck!