Vice President Kamala Harris confirmed that she will run for the Democratic nomination for president after President Biden's decision to suspend his re-election campaign.

"I am honored to have the President’s endorsement and my intention is to earn and win this nomination," Harris said in a statement on Sunday. 

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Shortly after Biden posted a letter on X revealing his intention to end his re-election bid, he sent out a separate post endorsing Harris for the Democratic nomination. "Today I want to offer my full support and endorsement for Kamala to be the nominee of our party this year," he said. 

The vice president called Biden's decision a "selfless and patriotic act," adding that he is "doing what he has done throughout his life of service: putting the American people and our country above everything else."

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Harris has also received endorsements from former President Bill Clinton and former Secretary of State Hillary Clinton, as well as several Democratic lawmakers. However, many Democrats have issued statements on Biden's decision without making mention of Harris or endorsing her. 

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Democratic strategists noted to Fox News Digital that the vice president is in the best position to take on former President Trump with just months to the election. Several Democratic operatives pointed to the fact that Harris was voted for by the same primary voters that chose Biden, and she has already established a campaign and fundraising infrastructure going into the crucial contest. 

Biden's decision to step aside comes after several weeks of mounting pressure for him to do so following a poor debate performance last month against former President Trump. Before his announcement, 37 congressional Democrats and those who caucus with them had pressed Biden to drop out. 

However, Biden had remained adamant that he was going to stay in the campaign up until his post to X. 

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President Biden endorsed Vice President Kamala Harris after announcing he is dropping out of the 2024 run for re-election. 

"My fellow Democrats, I have decided not to accept the nomination and to focus all my energies on my duties as President for the remainder of my term," Biden posted on X Sunday afternoon 

"My very first decision as the party nominee in 2020 was to pick Kamala Harris as my Vice President. And it’s been the best decision I’ve made. Today I want to offer my full support and endorsement for Kamala to be the nominee of our party this year. Democrats — it’s time to come together and beat Trump. Let’s do this," he continued. 

Biden announced just minutes before he endorsed Harris that he is dropping out of the presidential race. 

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"It has been the greatest honor of my life to serve as your President. And while it has been my intention to seek re-election, I believe it is in the best interest of my party and the country for me to stand down and to focus solely on fulfilling my duties as President for the remainder of my term," Biden said in his letter posted to X Sunday afternoon. 

Biden continued that he will address the nation in detail on the decision "later this week." As of Sunday afternoon, Harris has not tweeted about Biden dropping out. 

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He thanked Harris for her work in the administration, but stopped short of offering her his endorsement in his initial letter. Harris has been considered the top choice to replace Biden ahead of the president officially dropping out. 

Democrats' calls had mounted for weeks that Biden should drop out of the race, following his disastrous debate performance on June 27, which put his mental fitness under further scrutiny as he stumbled over his words and appeared more subdued than in previous years. 

As early as Sunday morning, however, Biden allies and the campaign doubled down that the president would not bow out of the race. 

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"It is false. And I think that it is false to continue to try to gin up this narrative. Joe Biden has said he is in this race," deputy campaign manager Quentin Fulks said on MSNBC on Sunday. "He is in this race to win it. He is instructing us to continue to carry out a plan to make sure that we are communicating [to as] many voters as possible. Actions speak louder than words, although sometimes, in this case, I wish that our words would speak louder so that people would stop asking this question. But we are doing both. The president has doubled down and said that he is running in this race to win it, and that he is not going anywhere."

Biden dropping out comes as former President Trump was officially nominated as the Republican Party's choice for president. Trump joined the Republican National Convention in Milwaukee, Wisconsin, last week, where he announced Ohio Sen. JD Vance as his running mate and accepted the nomination. 

The RNC was held just two days after an assassination attempt nearly ended Trump's life, leaving him with an injury to his right ear. A shooter opened fire on Trump's rally in Butler, Pennsylvania, last Saturday, injuring Trump and two others, and killing a 50-year-old married dad who was protecting his wife and family from the gunfire. 

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Trump addressed the shooting in his highly-anticipated RNC speech, while noting "you'll never hear it from me a second time, because it's actually too painful to tell." 

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"I'm not supposed to be here tonight," he said. "I stand before you in this arena only by the grace of almighty God. And watching the reports over the last few days, many people say it was a providential moment. Probably was."

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"For the rest of my life, I will be grateful for the love shown by that giant audience of patriots that stood bravely on that fateful evening in Pennsylvania," he added.