I think Hillary will draw a lot of votes from women voters from both parties.
I think Obama will draw more votes from minority groups that did not vote previously versus another candidate getting votes from the bigots that have never voted.
I think Edwards is going to run into money problems. I think he still is paying off debt from his last run with Kerry.
I really don't like any of the three and will swing my vote towards Guiliani if that becomes a reality...(unless Joe Gibbs runs, of course
)