This afternoon:

Kamala Harris @KamalaHarris
On behalf of the American people, I thank Joe Biden for his extraordinary leadership as President of the United States and for his decades of service to our country.

I am honored to have the President’s endorsement and my intention is to earn and win this nomination.
3:31 PM · Jul 21, 2024

Kamala Harris @KamalaHarris
I will do everything in my power to unite the Democratic Party—and unite our nation—to defeat Donald Trump and his extreme Project 2025 agenda. If you’re with me, add a donation right now.
[….]
3:31 PM · Jul 21, 2024

Previously:

Joe Biden (D) (July 21, 2024)