CHICAGO, Aug 20, 2024 (BSS/AFP) - Democratic White House hopeful Kamala Harris hugged Joe Biden on stage at the party's national convention late Monday after the US president said he would be "the best volunteer" for her campaign against Republican rival Donald Trump.

Wrapping up a forceful, roughly one-hour televised speech to party delegates in Chicago in which he passed the nomination torch to his vice president, the 81-year-old Biden said "I promise I'll be the best volunteer Harris and Walz's camp have ever seen," referring to Harris's running mate Tim Walz.