The superdelegates realize that Hillary Clinton's negatives are very high and are getting higher as she goes negative.

By the way, why won't she release the tax returns from the end of Bill Clinton's presidency until 2006  Doesn't she need to be vetted now because the Republicans will do it in the general election?

It is absolutely pathetic that she would compare a call to release tax returns to Ken Starr's investigations. Look for lots of op-eds and editorials pounding her for her history of secrecy.  Given what we've suffered with Bush-Cheney, we don't need another president who isn't absolutely committed to transparency.