Below are links to useful reference information on politics, government and the media.
Polls:
Real Clear Politics (poll aggregator)
FiveThirtyEight (Nate Silver)
Gallup
World Public Opinion (polls worldwide)
Watchdogs:
The Media
Editor & Publisher
Fairness and Accuracy in Reporting
Free Press
Media Matters
Nieman Watchdog
PR Watch
Romenesko
Campaign Finance
Open Secrets
Political Front Groups
SourceWatch
Political Contribution...
Just for the heck of it, I took a completely unscientific study and looked at how the major news outlets cover the federal deficit.