Read other letters about this article
when he/she has no realistic chance of winning the nomination, not before. But once it's clear that the candidate cannot win, it's time to get out. Hillary is so scared of the tremendous void her withrawal would create in her life, that she would rather put it off untill the end of the primaries, because she just can't face the reality that she will never be the president. It doesn't mean that the Democratic party should indulge her, we have a presidential campaign to win.