It’s actually quote good for Obama for Hillary to stay in the race as long as she can.
Because the attacks from Hillary are far softer than Obama is going to get from McCain and the more conservative right.
On so many issues, Hillary and Obama have similar positions. So Hillary is not going to criticize Obama.
And as long as Hillary is in the race, the main stage drama is Hillary vs. Obama.
I silently wonder if Hillary and Obama don’t realize this and are just letting this ordeal run through June so that the primary election is as short as possible.