How does Karl Rove know that Bush would win in Ohio?

The New York Times > Washington > Election 2004 > The President’s View: Among Family and Friends, a Confident Bush Waits:

At a rally in Albuquerque on Monday night, Mr. Rove was asked how Mr. Bush would compensate in the Electoral College if he lost Ohio.

“We’re winning Ohio,” Mr. Rove relied. “And we will win Ohio.” Then he repeated it like a mantra, or a wish: “We will win Ohio. We will win Ohio. We will win Ohio. We will win Ohio. We will win Ohio.”

What does Karl Rove know that we don’t know?