President Biden abandoned his bid for a second term just three weeks after his disastrous debate performance.

The timeline of the end of President Joe Biden's campaign for 2024 began with a disastrous debate performance against Donald Trump.

McClellan said she fully endorses Biden's backing of Kamala Harris as the Democratic nominee.

Former President Donald Trump and his campaign are reeling from the surprise announcement that President Joe Biden was ending his reelection bid.

Kamala Harris heads into the dog days of summer as the clear favorite to replace Joe Biden as Democrats' nominee. But there are still party members left to convert.

Sen. Tina Smith (D-MN) shares what’s ahead for Vice President Kamala Harris and Democrats with just 106 days until the general election.

Biden's stepped aside from the 2024 race but can't afford to take his foot off the gas as Republican criticism of his leadership continues at full throttle.

After announcing his exit, President Joe Biden endorsed Vice President Kamala Harris to be the next Democratic nominee.

ABC News’ Jon Karl, Mary Bruce and Rachel Scott break down everything you need to know after President Joe Biden’s announcement that he is exiting the 2024 presidential race.

Just two days after announcing he was prepared to return to the campaign trail, President Joe Biden announced Sunday that he is dropping out of the presidential race.

Vice President Kamala Harris has received a growing chorus of endorsements for the presidential race following news that Joe Biden will not continue his reelection bid.

He struggled to recover from a disastrous debate and Democrats' doubts.

A senior administration official said President Joe Biden still does not believe he is mentally diminished but felt he simply did not have the energy to campaign with vigor.

The Trump campaign, anticipating Kamala Harris as the Democratic presidential nominee, quickly drops a new campaign ad criticizing Harris' record on immigration and border security.

President Joe Biden announced Sunday he won't seek re-election. He then put his support behind Vice President Kamala Harris for the presidency.

Joe Biden thrust his party into virtually unprecedented uncertainty Sunday when he announced he was ending his reelection campaign. What comes next?

Who might Kamala Harris’ running mate be, should she be the Democratic nominee for 2024?

The timeline of the end of President Joe Biden's campaign for 2024 begins with a disastrous debate performance against Donald Trump.

The son of President Joe Biden releases a statement reacting to his father’s political decision.

Celebrities from across the world of entertainment shared initial reactions to President Joe Biden announcing he would not seek reelection.

Former President Donald Trump swiftly reacted to President Joe Biden's withdrawal from the 2024 election, saying his former opponent was "not fit to run."

ABC News' Kayna Whitworth speaks with Rep. Mike Quigley, D-Illinois, on Democratic support for Vice President Kamala Harris as the 2024 presidential nominee.

He spoke on ABC's "This Week" before Biden said he was stepping aside.

ABC News’ Jon Karl discusses a statement released by the Republican vice presidential nominee.

ABC News’ Rachel Scott speaks with Rep. Joaquin Castro, D-Texas, about the Democratic Party’s conversations leading up to the convention.

Presidential historian Mark Updegrove discusses the political legacy of Joe Biden.

ABC News’ Rachel Scott speaks with Sen. Chris Coons, a longtime ally and friend to President Joe Biden.

ABC News’ Mary Bruce discusses the former presidents and first ladies supporting President Joe Biden’s decision to drop out of the 2024 presidential race.

ABC News’ Jon Karl discusses the Democrats who are publicly supporting Kamala Harris as presidential nominee.

ABC News political contributor Chris Christie discusses the impact this political decision has on the Trump campaign.

ABC News’ Terry Moran explains how Republicans could complicate President Joe Biden’s remaining months in the White House.

The news comes as several top Democratic voices have called for him to step aside from his bid for reelection.

ABC News’ Martha Raddatz interviews Sen. Joe Manchin, I-W.Va., on “This Week.”

ABC News' Jon Karl discuss the vice president’s path to the Democratic National Convention.

Several congressional Democrats expressed concern about Biden's viability as a presidential candidate before his announcement Sunday.

ABC News political contributor Donna Brazile comments on President Joe Biden dropping out of 2024 presidential race.

Sen. Joe Manchin, I-W.Va., on Sunday called on Joe Biden to end his reelection campaign.

As speculation rises about President Joe Biden's future, some voters have already indicated their preferences for potential successors on the ticket.

President Joe Biden announced on Sunday that he will not seek reelection, writing in a letter that it's “in the best interest of my party and the country for me to stand down.”

Following his announcement he is stepping down from the presidential race, President Joe Biden has endorsed Vice President Kamala Harris as the Democratic nominee for president.

Plus, former President Donald Trump and his running mate JD Vance held their first campaign rally together in Michigan.

Rachael Bade, ABC News contributing political correspondent and co-author of Politico Playbook, analyzes the latest poll numbers on President Biden and former President Trump.

The Powerhouse Roundtable breaks down the latest news on “This Week.”

ABC News’ Jonathan Karl breaks down the latest in the race to the White House on “This Week.”

ABC News’ Terry Moran interviews swing state voters about the presidential election on “This Week.”

ABC News’ Martha Raddatz interviews Rep. Ro Khanna, D-Calif., on “This Week.”

President Joe Biden is expected to return to the campaign trail after recovering from COVID with just weeks before the Democratic convention, as calls for him to step out of the race grows.

The president vows to return to the campaign trail next week as his COVID-19 symptoms continue to improve.

Three weeks after President Joe Biden's fumbled first debate, some of the delegates who pledged to nominate him at the party convention are pushing for other options.

The softening of a staunch ally puts further pressure on Biden.