David Rebovich had a pretty good column yesterday, "Democrats' Budget Crisis Has Deep Roots".
It's basically a summary of the current situation, but worth a few minutes of your time.
"The most basic reason the Democrats have a crisis about the next budget is that they have for too long told their constituents that extensive government spending is possible because someone else, eg, the rich, the business community, people in the next town, will pick up the tab. If not, the bill can simply be covered by some painless budget maneuver. Well, those days are gone, and Democrats are bickering over what to do about it."