LOL!
If she breaks her promise to New York and runs in 2004 she can kiss all of New York goodbye. That would be the New Yorkers who voted against her for Senator, and will still vote against her for President, and the New Yorkers who voted for her for Senator backed by the promise to serve the state, who will be absolutely furious. That's a majority, folks.
New York isn't the biggest prize in the electoral sweepstakes anymore, but it's not to be thrown away either. She's not stupid. 2008 is soon enough, and far enough away.
Regards--
Mary Anne