On Saturday, Musk said he would bring back Mr. Trump to the platform as part of a shake-up.

Mr. Musk asked users on the platform if they would allow Mr. Trump to return to the service. After the riot at the U.S. Capitol, Mr. Trump was banned from using the social media platform.

More than 15 million votes were cast in response to Mr. Musk. The former president did not have a verified account until after Mr. Trump did.

The people have spoken. The man will be back. The Latin phrase means that the voice of the people is the voice of the Almighty.

Requests for comment from Mr. Musk and his company were not returned.

Mr. Trump said on Tuesday that he would seek the White House again in 2024. It's not clear if Mr. Trump will return to the social media platform. He has a financial stake in his new social network.

After Mr. Musk took over, Mr. Trump said he was staying on Truth.

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There was a quick change. Since completing his $44 billion acquisition of the social media company in October, Musk has moved quickly to change it. Some of the changes have been looked at.

The person is going private. The delisting of the company's stock is part of Mr. Musk's acquisition of the company. Not having to make quarterly financial disclosures is one of the benefits of being a private company. Private companies are not subject to the same scrutiny as public ones.

There are layoffs. About 3,700 jobs were eliminated after Mr. Musk closed the deal. The engineering and machine learning units, the teams that manage content moderation, and the sales and advertising departments were among the divisions that were laid off.

It is possible to moderate content. After closing the deal to buy the company, Mr. Musk said that a content moderation council would be formed. Advertisers have stopped spending on the platform because of the fear that Mr. Musk will loosen the rules.

There could be other changes. As Mr. Musk and his advisers look for ways to make more money at the company, they are said to have considered adding paid direct messages, which would allow users to send private messages to high-profile users. The company has filed paperwork to make it easier to process payments.

It was not clear if Mr. Musk would keep allowing Mr. Trump to use his account on the social networking site. Since buying the company, Mr. Musk has slashed its work force, pushed for new products and changed his mind about what content to allow on the platform.

Mr. Musk said in May that he would allow Mr. Trump to return to the social network. After completing his buy out, Mr. Musk paused on changing the rules of the micro-messaging service.

He said last month that he wouldn't make any changes to account reinstatements before the content moderation council convenes. There is no council. On Friday, Mr. Musk said that he was allowing some people who had been banned from the platform to return.

Alex Stamos, the director of the internet observatory, said it was odd that Mr. Musk would use a poll on the issue of bot accounts to assume that the result would be the same as before.

Large numbers of accounts can be created by small groups to manipulate features.

Misinformation experts and others were concerned about Mr. Trump's return to the social networking site. The former president used social media to promote his version of events. Even before his own staff was told, he would often spread inaccurate information and announce policies on social media. Mr. Trump had made comments about the integrity of the vote in the past.

The research director at Harvard's Shorenstein Center on Media, Politics and Public Policy said that if Mr. Trump reverted to the same kind of content that he has been sharing on Truth Social, he could make it difficult for people to communicate.

She said it was likely to be a boost for Mr. Trump's brand because he could now reach more people.

It isn't just a matter of degree when it comes to the difference between TRUTH SOCIAL and TWITTER. It is a matter of influence, with global leaders, journalists, technologists, celebrities, culture makers, these are the people that are on the social networking site. She said that Mr. Trump's brand would be strengthened even if he just posted links to his posts.

Conservatives said it was a victory for the freedom of speech. On Saturday evening, the phrase "He's Back" was being used.

Steven Crowder said that Elon Musk reinstating Donald Trump's account was a middle finger to all of the mainstream media. This should make you happy if you support free speech.

Mr. Musk's opinion of Mr. Trump has changed. He called Mr. Musk an insult because he apparently supported his political opponents in the 2016 and 2020 elections. Mr. Trump said that Mr. Musk got a bad contract when he tried to back out of his agreement to buy the company.

Last month, when Mr. Musk closed his acquisition, Mr. Trump said he was very happy. In a post on Truth Social at the time, Mr. Trump said that he was happy that the social networking site would no longer be run by left-wing extremists.

The return of Mr. Trump's account could make advertisers hesitant to advertise on the platform. A new system that allowed anyone to pay for a check mark to verify their account caused chaos when Mr. Musk took over.

Critics of Mr. Musk started lobbying advertisers to leave.

The president of the N.A.A.C.P. said that all advertising should be stopped.

He said that if you want to cause an insurrection at the U.S. Capitol, you can do it on Musk's platform.

Kate Conger reported.