PolFeeds. n. A website that brings you virtually all of the RSS feeds offered by Presidential Candidates, Members of Congress, and the White House together in one place.
If you want info from a particular politician, you can just go to "name.polfeeds.com". For example, barackobama.polfeeds.com will give you the content for all of Obama's feeds, Twitters, YouTube videos, blog posts, Flickr photos, everything. Of course, you can limit your view to particular types of items. If you want to see only blog posts by House members, you can go to polfeeds.com/house/blog.
Appending "/rss" onto the end of any url will give you the rss feed for the items on that page. You can also subscribe to the feeds individually or create a custom feed. For example, you could put together videos from Pelosi with blog posts from McCain and press releases from Boehner.