Forget all the rhetoric about four more years of Bush, Old Politics vs. New Politics and all that jazz. Absent any plausible reason for a late McCain surge and victory, the inescapable fact about an Obama loss would be an ugly truth to haunt American life for years to come.
Around the edges of all the opinion poll data about what will happen today is an uneasiness that points to heavy turnout, early voting, the question of whether youth registration will convert into actual balloting, etc. as imponderables in this unusual election year that shows Obama outpolling McCain on almost every issue of voter trust.
But the GOP elephant in the room is race.