... CNN (John King) keeps saying that neither candidate will be able to reach the necessary 2024 to win.  I knew a simple majority wins (there are a total of 4047 delegates- 794 superdelegates and 3253 pledged delegates)...

 The media (especially CNN) is making such a simple process seem so complicated. It's not.  In a 2 person race, the person with the most delegates wins.  That's it.  Forget all of John King's special computer graphics about both candidates falling short. 

Technically, Edward's 24 delegates might not vote for Obama or Clinton, but that's extremely unlikely.  OK...let's assume that to be true...then Obama would only need to beat Hillary by 25 votes to get to 2024 delegates.  She would have 1999.  Edwards 24.  That's a total of 4047.

The most likely scenario is that Obama and Clinton will split the remaining pledged delegates.  To overcome Obama's 135 pledged delegate lead, Hillary would need 465 superdelegates to Obama's 329.  So far it's 238 to 199.  She would need 227 of the remaining 357 superdelegates.  In other words, beat him 227 to 130.  That ain't gonna happen...

Conclusion:  Hillary is not the comeback kid.