. >>> welcome back to "up close," we have doug muzzio professor at cuny. what an interesting development. new york now the center of the political world for the first time really in decades. >> yeah, it's a must win primary for trump. if he's going to get 1237. and it's important for hillary because it will stem the momentum of sanders. and propel her i think to the nomination. >> sanders does have the big mojo going. he won eight out of the last nine primaries and caucuses and clinton had the lead in the polls. not just a win but a resounding win right? >> ten points is a resounding win. sanders can't finish second. candidate. in states that count. >> right. >> so big win for hillary. >> you don't see an open convention for the democrats. >> no. no. and out of the delegates that remain he's got to win 69% of them. virtually impossible. >> and that's for the republicans, it's a lot closer for trump to get to that magic 1237. >> yeah. and people saying between 1150 and who knows? so -- >> for delegates the number of delegates. >> for delegates and that mean