Hillary Clinton is ready to put the Bernie Sanders campaign to rest in the last of the big primaries before the Democratic National Convention in July - but the Vermont senator will not go quietly.
While the Associated Press made its Monday night declaration that the former Secretary of State has earned more than enough delegates to be the nominee, Mr Sanders has vowed to take his “revolution” all the way to the Philadelphia convention.
Presumptive Republican nominee Donald Trump will continue to bask in his victory, and the Democratic rivals will split 694 delegates from six states - New Jersey, California, New Mexico, Montana, North Dakota, and South Dakota - after Tuesday’s vote.
The District of Columbia is the last primary for the Democrats and is taking place on 14 June.
Ms Clinton currently has a delegate count of 2,383 - the number needed to win the nomination, and 571 of whom are superdelegates and will cast their votes at the Convention. Mr Sanders trails with 1,569 delegates.
Mr Sanders, however, insists he can change the minds of the superdelegates by late-July.
