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How Clinton & Trump can clinch nominations

| Hillary Clinton is one step closer to winning the Democratic nomination after her big victory in New York on Tuesday. She needs fewer than 500 more delegates to reach the 2,383 needed to become the nominee. On the Republican side, Donald Trump has a real chance if he wins enough delegates in each upcoming voting state. With analysis, CBS' Major Garrett and Nancy Cordes join CBSN's Josh Elliot.