The election is not until April 19 - that's an eternity away from now in politics. Sanders might not even be in the race at that time.
And it's all fun and games for Bernie in Brooklyn until the borough's African Americans break heavily for Clinton and the ultra-orthodox Jewish registered Democrats in the borough vote en masse for Clinton by a 95-5 margin, offsetting and outnumbering the hipster vote. Clinton has good relations with many ultra orthodox Jewish communities, dating back from when she was a Senator from New York.
This is the first I've heard of this. Why do the orthodox Jews love Clinton so much?