Mostly the comments sections of news aggregator sites like reddit and HN. I figure actual news sites are about as valuable as refrigerators in Antarctica at this point; if I'm going to get decent information I really am better off with quantity over "quality".

I'm only half joking here, too, which is the saddest part. Every article ends up being eviscerated by the comments section because of some bias in one direction or the other, so I might as well just cut to the chase and watch the actual discussions unfold.

Also, forum.nationstates.net. For the uninitiated, it's the forum for an online political simulator; unsurprisingly, it attracts people who actually study politics or are otherwise psychologically invested in the political world, so it's interesting to see the perspectives of people who may or may not actually be experts in political science. Sometimes they seem to just enjoy politics for politics' sake, though, which gets fascinating in the same way that a train wreck is fascinating.