This is a devastating blow. I can't think of another endorsement of Hillary continuing her campaign that would give dedicated Democrats who support her more reason to pause.
I am speaking, of course, about the man who knows more than anyone in America about hurting Democrats by refusing to quit an election that you won't win.
The one and only Ralph Nader, in a message posted on his website, urges Hillary to carry on the struggle. Excerpt below the fold.
Just read where Senator Patrick Leahy is calling on you to drop out of the Presidential race.
I know something about this.
Here's my advice:
Don't listen to people when they tell you not to run anymore.
Just like every other citizen, you have a right to run.
Whenever you like.
For as long as you like.
It's up to you, Hillary.
Just tell them -
Get used to it.
(edited: I didn't want to say that Hillary can't win. She could.)