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NEW YORK, NY - APRIL 19:  Democratic presidential candidate Hillary Clinton walks on stage after winning the highly contested New York primary on April 19, 2016 in New York City. Clinton, who had enjoyed a large lead over her rival Bernie Sanders only months ago, saw that lead shrink as the Sanders campaign made inroads with younger and more liberal voters.  (Photo by Spencer Platt/Getty Images)
NEW YORK, NY - APRIL 19:  Democratic presidential candidate Hillary Clinton walks on stage after winning the highly contested New York primary on April 19, 2016 in New York City. Clinton, who had enjoyed a large lead over her rival Bernie Sanders only months ago, saw that lead shrink as the Sanders campaign made inroads with younger and more liberal voters.  (Photo by Spencer Platt/Getty Images)

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Clinton says nomination is in sight

Clinton celebrates New York victory as Sanders vows to stay in this race despite the challenging math. CNN's Jeff Zeleny reports.

Clinton says nomination is in sight

Clinton celebrates New York victory as Sanders vows to stay in this race despite the challenging math. CNN's Jeff Zeleny reports.