Also, filtering options would be great, for example only viewing tweets from independents, or only ones that mention Romney.
In the meantime, if you want to play with filters, feel free to try this super-alpha toy I threw together the other day: https://www.votizen.com/twitter-fight/. It works on a rolling 24-hour window of Romney- or Obama-mentioning tweets. Buggy as heck, but fun to play with!