Whitehouse is only one of the three executive brances. President's power is limited.
Besides, Dem and Rep are just two heads out of the same political party. Do they really have much differences in real actions?
Presidents debates are like show. Large industrial complexes already voted who would be the next one.
If powerful hands want to keep obama, the stock market will not crash and oil price will be low before election. If market crashes, then its Romney.
No matter what, the Iran war drum is beating. After election, watch out for that.
sigh.