File picture of U.S. President Joe Biden
| Photo Credit: AP

U.S. President Joe Biden ended his reelection campaign on Sunday after fellow Democrats lost faith in his mental acuity and ability to beat Donald Trump, leaving the presidential race in uncharted territory. He also announced his endorsement of Vice-President Kamala Harris as the Democratic nominee.

ALSO READ: U.S. presidential elections LIVE updates: Joe Biden drops out of race

Mr. Biden, in a post on X, said he will remain in his role as president and commander-in-chief until his term ends in January 2025 and will address the nation this week.

“It has been the greatest honor of my life to serve as your President. And while it has been my intention to seek reelection, 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,” Mr. Biden wrote.

By dropping his reelection bid, he clears the way for Vice President Kamala Harris to run at the top of the ticket, the first Black woman to do so in the country’s history.

Endorses Harris

Mr. Biden, 81, in a separate post on X, said that he would support and endorse Ms. Harris to be the Democratic party nominee ahead of the Democratic National Convention.

“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 wrote.

It was unclear whether other senior Democrats would challenge Ms. Harris for the party’s nomination, who was widely seen as the pick for many party officials — or whether the party itself would choose to open the field for nominations.

Pressure to step down

Mr. Biden’s announcement follows a wave of public and private pressure from Democratic lawmakers and party officials to quit the race after his shockingly poor performance in a televised debate against Republican rival Mr. Trump, who is 78.

Mr. Biden’s failure at times to complete clear sentences took the public spotlight away from Mr. Trump’s performance, in which he made a string of false statements, and trained it instead on questions surrounding Mr. Biden’s fitness for another 4-year term.

Days later he raised fresh concerns in an interview, shrugging off Democrats’ worries and a widening gap in opinion polls, and saying he would be fine losing to Mr. Trump if he knew he’d “gave it my all.”

His gaffes at a NATO summit — invoking Russian President Vladimir Putin’s name when he meant Ukrainian President Volodymyr Zelenskiy and calling Harris “Vice President Trump” — further stoked anxieties.

Only four days before Sunday’s announcement, Mr. Biden was diagnosed with COVID-19 for a third time, forcing him to cut short a campaign trip to Las Vegas. More than one in 10 congressional Democrats had called publicly for him to quit the race.

Mr. Biden’s historic move — the first sitting president to give up his party’s nomination for re-election since President Lyndon Johnson in March 1968 — leaves his replacement with less than four months to wage a campaign.