Traditional media outlets are known to report political news in a biased way, and it matters because it could affect the political beliefs of the audience and can ultimately alter voting behavior. Hence tracking bias in everyday news and building a platform where people can receive balanced news information is important. In this work, we proposed a model that maps the news media outlets along an one dimensional dichotomous political spectrum using the co-subscriptions relationships
inferred by Twitter links. By analyzing 7 million Twitter links, we have shown that the political dichotomy naturally arises on Twitter when we only consider direct media
subscription. Furthermore, we demonstrated a real-time Twitter-based application that visualizes an ideological map of various media sources.