Biden announces vice-presidential running mate

Democratic presidential candidate Joe Biden picked Senator Kamala Harris as his choice for vice president, he wrote on Twitter.

In Harris, a 55-year-old senator from California who made her own run for the White House, Biden gains an experienced politician already battle-tested by the rigors of the 2020 presidential campaign as they head into the final stretch of the Nov. 3 election.

Biden called Harris "a fearless fighter for the little guy, and one of the country’s finest public servants." Harris wrote on Twitter that Biden could "unify the American people because he’s spent his life fighting for us."

Biden and Harris will appear together on Wednesday at an event in his hometown of Wilmington, Delaware, the campaign said.