VP Harris top choice to replace Biden in election race if he steps aside.

WASHINGTON (Reuters) - Vice President Kamala Harris is the top alternative to replace U.S. President Joe Biden if he decides not to continue his reelection campaign, according to seven senior sources at the Biden campaign, the White House and the Democratic National Committee with knowledge of current discussions on the topic.
Biden's fumbling, sometimes-incoherent and widely-panned first-debate performance against Republican rival Donald Trump last week set off a wave of panic within the Democratic party over concerns that he may not be fit enough to serve a second term, and prompted calls for top aides to resign.