Just for some supplementary exposure, if you use Twitter, I have found politicians can be great to follow because they don't use net-speak. Also, since they tend to have issues that are important to them you don't just get random thoughts. Kind of like reading a newspaper, you may watch a particular topic develop as time goes by. All in 140 characters or less (actually this often feels like a lot in Japanese).
Here's a list of parties. If they tweet, their Twitter page might be listed on the representative's directory page, or their actual homepage.
But as with anything political, people's opinions may be highly-offensive, so beware.