To add to my previous post, 538 does a great job of highlighting why the math doesn't work out for Bernie.
http://projects.fivethirtyeight.com/election-2016/delegate-targets/democrats/
He needs to hit/surpass all his targets from this point forward.
Except, over the first 22 contests he's missed his target 14 times, matched 2 times and surpassed 6 times by (2, 1, 2, 4, 1, 2) (12) delegates.
Hillary however has surpassed her targets
14 times, matched 2 times and missed 6 times. Her surpasses are (5, 3, 7, 9, 1, 4, 9, 5, 1, 11, 22, 10, 4, 11,) (102).
So saying Bernie is coming within 170 of Hillary just sounds laughable. Especially when the site has been generous with Bernies targets, like 50 of North Carolinas 107 (In reality it'll be 30~)
The only noticable primary defeat he's won against Hillary (other than Vermont and NH for obvious reasons) is Oklahoma, and that was about 10 points, there rest have been super close.)
So show me where he is gonna start leading primaries by 30 points to make up the gap, when he's managed 10 points only once outside his home state.
Also want to highlight, Bernie has done well in caucuses and his home state and bordering. There is only one worthwhile Caucus left (Washington) the rest are primaries.