Before all these happen in recent days, McCain actually had a plan to balance the budget, by cutting earmarks (Good), cutting government spending (Good), and giving back tax to stimulate economics (typical GOP theory). It looks like impossible right now, but he thought about this in the very beginning. I believe him, since none asked for it, and neither other GOP candidates promoted this idea.
Obama never thought it. If economic improves, he might or not, but who knows.
I am an economic conservative first and most. I am all against big spending and 'spread the wealth around'. McCain is my man this time.