According to the calendar on the
NYT website, there's 1,114 delegates remaining. Sanders has 1,411 (not inc. superdelegates) and needs 2,383 to clinch the nomination. So winning all the remaining delegates would put him at 142 more than he needs.
However, the NYT numbers include supers. For instance, they have 546 in CA which is actually 476 pledged and 73 unpledged per
Green Papers (which says they have 548 delegates... how do we get anything done in the country?). I'm too lazy to do the math of subtracting each state's unpledged delegates but I'm guessing it's more that 142 total meaning that Sanders mathematically can't get enough pledged delegates to win. Clinton, with 1,701 pledged delegates probably could if she won them all but she won't either. Neither finding is especially meaningful since the system has superdelegates whose vote is just as valid as those of pledged delegates and you're supposed to be winning their support. Saying otherwise is like losing at chess and saying your opponent didn't legitimately win because he used his queen and you think that queens are cheap.
Edited, May 6th 2016 2:43pm by Jophiel