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As the 2020 presidential election begins to draw to a close, President Trump and Democratic nominee Joe Biden took the debate stage for a final time Thursday night -- and celebrities were among those watching.

Many stars shared their reactions on social media -- as they did for the first debate, the dueling town halls, and the vice presidential debate between Vice President Mike Pence and Sen. Kamala Harris.

Some supported Biden while others backed the president.

".@joeBiden cares about American lives and their livelihoods. Trump doesn't care if we live or die," actress Alyssa Milano wrote. "Therein lies the fundamental difference between Biden and Trump. #Debate2020 #TrumpLied220KDied #HealthcareVoter."

Actor Billy Eichner wrote, "Wow. Even by Trump standards, this is an embarrassment for him."

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"New York is not your wonderful city," said Joy Behar after Trump expressed a fondness for the city. "New Yorkers hate you."

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Andy Cohen echoed Behar's comments when Trump implied people were leaving New York.

"Currently in NYC," he wrote. "Not ghost town. hi."

"'I don’t look at this in terms that he does: blue states and red states. It’s The United States,'" said Uzo Aduba, quoting Biden. "@JoeBiden is running to unite this country that has been ripped at the seams."

Comedian Patton Oswalt slammed the president for accusing opposers of a witch hunt since before his election.

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"Man, that 'phony' witch hunt sure caught a lot of witches," he wrote.

"Trump send love letters to North Korean dictator, he takes the word of Putin and of the Saudi murderer MBS as they kill our journalists and taking out bounties on our military men and women," Marvel star Mark Ruffalo wrote.

"Ok - you saw this man lie for 1 hour 30 minutes . Have you had enough of this monster ? Are you done ?" asked John Cusack.

"If I read anybody saying “Trump was Presidential” or about his new tone or how he was restrained I’m gonna walk into the exact middle of the forest and lay down until time and insects take me home," joked Kumail Nanjiani.

"'And we had a 'good relationship' with Hitler before he invaded.' Biden got them ZINGERS tonight ya'll," Aisha Taylor said.

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"Housewives" alum Brandi Glanville said: "It's so f--ked that Trump has kids in cages away from parents. I'm going to Canada."

Trump had a handful of supporters as well.

"TRUMP!! Doing great!!! Going great!!" said Kirstie Alley. "Steady as you go!!! GREAT JOB!!" She later added, "You are on fire on this one Mr. President!! He just Lost.. he’s toast."

"The Biden family is a vacuum cleaner," wrote actor James Woods.

".@JoeBiden is 100000% corrupt. Pass it on..." said singer Joy Villa.

Added Antonio Sabáto Jr.: "Great night @realDonaldTrump won big time!"

“I have not taken a single penny from any foreign government...” -Joe Biden That was a mistake," wrote Kevin Sorbo.

The showdown between Trump and Biden at Belmont University in Nashville, Tenn., marks the final presidential debate before the Nov. 3 election.

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A typical election cycle contains three debates, but after the second was set to go virtual in light of Trump's coronavirus diagnosis, the president refused to participate, leading to dual town halls.

The debate Thursday evening also saw each of the candidates' microphones muted in an effort to curb the interruptions that the first debate became known for.