Experience is important. Of course Bush is experienced, as a result he continues to call the turn and will until end of term.

Running the United States is a horse-traders dream. No bill that goes to the President for signature (unless about motherhood) gets there in the way it was originally written; additions and subtractions are made by legislators with strongly contrasting views, committees knead the bills into a form that has a chance for passage, (or the bill is deep-sixed or sent back for changes), re-submitted to the house where it was proposed and may be passed- with amendments and goes to the other house. The bill may be passed there in a different form and then it goes back to committee to resolve differences and then is voted on again.
(Current example- The House has passed the economic stimulus bill but the Senate is balking; there will be changes before they get together (they probably will, since this is an election year)). The president says he will veto amendments, so the bill may be some time before a compromise bill is attained.

Clinton is much better able to handle the rough and tumble, Obama seems to have neither the patience nor the horse-traders sense of the possible.

I dunno if we will see a Democratic president; for many people (not just the rich) the Republican Party still seems to be the best for their interests. This election looks to be as close as the last one.