(VOVworld) – Former US Secretary of State Hillary Clinton and Senator Bernie Sanders of Vermont took part in the final US Democratic presidential primary in Washington D.C. on Tuesday.

Hillary Clinton delivered a speech in Cleveland, Ohio on June 13 (Photo: TTXVN)

Although he has no hope of winning the nomination, Senator Sanders continued his campaign. Earlier, he vowed to join forces with Clinton to defeat Republican nominee Donald Trump. He met with Clinton to discuss the Democratic platform for the upcoming Democratic National Convention to be held in Philadelphia in July.