@Butrflynet,
If the balance of power was every in jeopardy (and I don't believe it was) Bush could never have destroyed it alone. He would have needed the willing cooperation of the Congress and Judiciary.
If Obama wins, there is virtually no chance that he will govern with a Republican majority in either the House or Senate, and there is a fair chance that there will be a filibuster proof Democratic majority in the Senate.
Fortunately, it seems unlikely that he will have an opportunity to create an unassailable liberal bloc in the Supreme Court. Roberts, Alito and Thomas are relatively young men, and Scalia and Kennedy seem to be in good heath.
Whatever Obama's domestic agenda may be, I would not expect Congress to apply the brakes. Quite the contrary.
Frankly if you think Obama will not be any less partisan in his leadership than Bush was when the Republicans controlled Congress, you are fooling yourself.
The proof in the pudding of his assertions will not be whether or not he says he has duly considered all views, but whether or not there are occasions when he allows himself to be persuaded by views not in sync with the Democratic Party line.
Unless of course you (or, more importantly, he) believes that the Democratic Party Line is 100% correct, in which case consideration of opposing viewpoints will be simply part of a charade.