This is a mathematical proof that Bernie can still win the nomination for President. Read it. What this tells you also, is the incredible bias of the media, which has been giving us the impression that it's all over but the shouting. It's not.
Fairly short article, the math is pretty simple -- just arithmetic.
Find it here: https://johnlaurits.com/2016/04/28/this-is-what-will-happen-at-the-democratic-convention/