It's interesting that the superdelegate declaring for Obama today - Amy Klobuchar of Minnesota - was keen to say that there's no reason for Clinton to drop out:
She should continue her campaign," she said."I have faith that our candidates wil figure this out and this will come to a conclusion in early summer."
"They are strong people and have good hearts," she said.
This may be Klobuchar's personal feeling on the matter, but it's also a sign that the Obama campaign is wary of being seen trying to strong-arm Clinton out of the race.
Senator Klobuchar also said that Obama could dissolve the 'hard vinegar edge' of contemporary politics. Could this woman sound any more Minnesotan if she tried?