Jon Stewart, Cher, Cardi B, Barbra Streisand, and Barack Obama are among those responding to the historic news.

In what's easily shaping up to be the most unprecedented presidential election in American history, President Joe Biden has decided to drop his re-election campaign and has supported Vice President Kamala Harris. Naturally, Hollywood was quick to react.

Barbra Streisand

"Joe Biden will go down in history as a man who accomplished significant achievements in his 4 year term. We should be grateful for his upholding of our democracy."

Jon Stewart

"Legend."

Cher

"In my heart im tortured, Because I Don’t believe the Democrats Can win the Presidency With 'Pres Biden' 'Joe' whom I’ve Loved since we met in 2008.I Campaigned for him I believe ITS TIME 2 PASS THE BATON. TIME 4 DEMS 2 THINK 'WAY' OUTSIDE THE BOX. MAYBE EVEN A SPLIT TICKET'

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Jamie Lee Curtis

"I support wholeheartedly @joebiden and his decision to step down and to endorse unreservedly @kamalaharris. SHE IS TRUSTED AND TESTED and she is a fierce advocate for women's rights and people of color and her message is one of HOPE and UNITY for America at her time of great national divide."

Yvette Nicole Brown

"Be forewarned, if you pop in here w/anything but “Let’s go! #TeamHarris!” I’m blocking you on sight. The need for us to show up & #VoteBlueUpAndDownTheBallot has not changed. Only the name on the top of our ticket has. Good vibes only. Let’s Go!"

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Cardi B

"AHAHAHAHA LETS GOOOOO I TOLD YALLL KAMALA WAS SUPPOSED TO BE THE 2024 candidate…..STOP FCKIN PLAYIN WITH ME !!!!!!!"

Related: The View cohosts celebrate Joe Biden dropping out of presidential race: 'Best for the country'

Finneas

"I see a person putting the people before themselves and their pride today and for that, I have an enormous amount of respect."

Kathy Griffin

"Let’s make history!!!! Finally!!!"

Sheryl Lee Ralph

"President Biden has endorsed Kamala Harris!"

Jon Cryer

"We have 90 days. President Harris. Let’s do this."

Mark Hamill

".@JoeBiden has a record of accomplishments unmatched by any president in our lifetime. He restored honesty, dignity & integrity to the office after 4 years of lies, crime, scandal & chaos. Thank you for your service, Mr. President. It's now our duty as patriotic Americans to elect the Democrat who will honor & further your legacy. #VoteBlue2024ProtectDemocracy 🇺🇸"

Robin Thede

"Black Lady President 👏🏽👏🏽 and swipe for my endorsement for VP 😉"

Aaron Sorkin

"I take it all back. Harris for America!"

Rosie O'Donnell

"thank u joe biden - lets goooooo !!!!! #vote #harris #energize"

Lizzo

"We are truly living in unprecedented times"

Spike Lee

"ONCE AGAIN A SISTA COMES TO DA RESCUE."

Mark Ruffalo

"Okay everybody, now we have our marching orders and time to hit the trail running. No to Trump/Vance. No to the right-wing Christian religious takeover of our nation. Nothing wrong with Christianity; just shouldn’t be running a nation birthed from freedom of religion. #StopProject2025 #womensreproductivefreedom #VoteBlue"

Julia Louis-Dreyfus

"Thank you, President Biden, for your service and for your extraordinary leadership and for your love of this country and all its people. @joebiden"

Shonda Rhimes

"Thank you for your extraordinary career of public service, @joebiden 🇺🇸🇺🇸."

Barack Obama

"Joe Biden has been one of America’s most consequential presidents, as well as a dear friend and partner to me. Today, we’ve also been reminded – again – that he’s a patriot of the highest order."

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