Hillary Clinton Wins the Battle but Is Still Losing the War

Barack Obama was clobbered by Hillary Clinton in West Virginia, but he's still the presumptive Democratic nominee. She vows to continue campaigning despite a debt of $20 million, almost $12 million of which is her own money. Has Clinton proved that Obama will be a weak candidate against John McCain? How important are low-income white voters? Will McCain have to run, in part, against his own party's unpopular incumbent, as the Republicans lose a Congressional seat in Mississippi?