You can read Rove’s editorial, “Obama’s Campaign Will Take The Low Road” at the Wall Street Journal if you want. Some lowlights are:
He will distort beyond recognition his opponent’s arguments.
[snip]
No honest differences are possible with Mr. Obama. He will impugn the motives of any who disagree with him.
[snip]
Mr. Obama will build entire edifices on top of one fake premise, all dressed up in one big phony assumption.
You get the picture.