Rep. Bennie Thompson, D-Miss., said if President Biden steps down, not choosing Vice President Kamala Harris as the new nominee would be "the kiss of death" for Democrats.
The first presidential debate sparked growing calls for Biden to drop out of the race to allow a new candidate to step in, and several candidates other than the vice president have been floated as potential replacements.
Thompson described Harris as being "incredibly strong" and suggested she is the only candidate Democrats can replace Biden with in 2024.