Hillary Clinton has rounded up DNC chair endorsements to counter yesterday's defection. Their letter makes the electability case. The nut graf:
In fact, if the election were held today, Hillary would beat Senator McCain, but Senator Obama would lose to the presumptive GOP nominee. According to the most recent polls available, Hillary would beat McCain by a margin of 279 to 259 Electoral Votes. But McCain would beat Obama by a margin of 291 to 247 Electoral Votes.
Scoff at will.