It’s time to admit Hillary Clinton is an extraordinarily talented politician
Hillary Clinton 'secures Democratic nomination' – AP
The count puts Mrs Clinton on 2,383 - the number needed to make her the presumptive nominee.
She will become the first female nominee for a major US political party.
Mrs Clinton reached the threshold with a big win in Puerto Rico and a burst of last-minute support from superdelegates, AP said late on Monday night.