Found this site today called NewsTrove which aims to group searches of news sites, blogs, etc based on your preference (conservative, liberal, catholic, etc).  

From the site: “NewsTrove provides a news search service that employs qualitative ranking and filtration of news content. NewsTrove indexes internet news content, such as news articles, personal weblog journals known as blogs, audio and video content known as podcasts, newsfeeds, and websites.”