Ahead of the debate, held in a studio at CNN's Atlanta headquarters, both campaigns agreed to a set of guidelines established by CNN.

Campaigns for former President Donald Trump and President Joe Biden reacted to their candidates' performance. ABC News' Rachel Scott recaps the debate.

Joe Biden's debate performance Thursday sent Democrats into a panic amid existing concerns over his age and fitness for office.

ABC News' Linsey Davis is joined by Vice President Kamala Harris to discuss the debate between President Joe Biden and former President Donald Trump.

President Joe Biden and former President Donald Trump met for a showdown over policy and their records, but not everything was factual.

Where Joe Biden and Donald Trump stand on key 2024 issues bound to come up at their first presidential debate

A new 538/Ipsos poll conducted before the debate shows where Biden and Trump stand.

Joe Biden delivered a halting performance in Thursday's debate with Donald Trump in an event largely viewed as a gauge on the two candidates' fitness for office.

From the earliest moments of the night, President Joe Biden's biggest political weakness -- his age and perceived frailty -- became a clear liability on the debate stage.

Swing state voters spoke with ABC News following the first presidential debate of the election cycle.

Former President Donald Trump and President Joe Biden faced off in their first debate of the 2024 election cycle. ABC News' Mary Bruce and Jonathan Karl report.

Former DNC Chair Donna Brazile and former White House Chief of Staff Reince Priebus discuss "missed opportunities" during President Joe Biden's debate with former President Donald Trump.

President Joe Biden took the stage at his campaign's watch party following his CNN debate performance.

President Joe Biden and former President Donald Trump are poised to face off again on the debate stage on Sept. 10, with ABC News' David Muir and Linsey Davis moderating.

ABC News’ Linsey Davis speaks with Rep. Pramila Jayapal ahead of the first presidential debate on how Biden can win back progressive voters on issues from immigration to the Israel-Hamas war.

President Joe Biden and former President Donald Trump are set to take the stage Thursday night in a studio at CNN's Atlanta headquarters.

Protecting democracy is a top issue for voters but they're divided on trust.

Voters across the key swing states of Georgia, Wisconsin, Michigan, and Pennsylvania spoke with ABC News about what they hope to hear on the debate stage.

ABC News’ Linsey Davis spoke with ABC News contributor and presidential historian Mark Updegrove about what makes this first presidential debate so unique and how the debate could impact the race.

Immigration and the border crisis are expected to be major talking points during the debate between President Biden and former President Trump. ABC News' Mireya Villarreal reports.

ABC News’ Linsey Davis spoke with Florida Representative Byron Donalds about what he thinks former President Trump will focus on during the first presidential debate of 2024.

Voters in battle ground states respond to what they want to hear on the debate stage, and their ideas to improve the everyday struggles confronting millions of families.

President Biden and former President Trump are taking the debate stage amid two major global conflicts, Israel's war with Hamas and the war in Ukraine. ABC News' Matt Gutman and James Longman report.

The debate will not feature an audience and microphones will be unmuted only when it is a candidate's turn to speak. ABC News' Rachel Scott reports from Atlanta.

ABC News’ Linsey Davis speaks with President Biden’s campaign co-chair & former senior adviser Cedric Richmond on how the president plans to differentiate himself at the first presidential debate.

ABC News’ Linsey Davis speaks with GOP Georgia Gov. Brian Kemp ahead of the first presidential debate in Atlanta, a state Biden narrowly won in 2020 as both sides hope to win over voters in 2024.

Thursday’s debate will be the earliest ever in a general election and the first where a president and former president go face to face.

This is the first debate in U.S. history between a sitting president and former president. ABC News’ Rachel Scott, Katherine Faulders, Mark Updegrove and Galen Druke join the show.

Preparations are more than underway for Pres. Joe Biden and GOP’s Donald Trump’s debate Thursday night. Terry Szuplat, former chief speechwriter to Barack Obama, provides his unique perspective.

Our Panel breaks down the rules to Thursday’s debate, and looks back on some moments from years past. Also, we spotlight a big Supreme Court decision on abortion.

Atlanta is the stage for what will be the earliest presidential debate on record. ABC News' team of contributors and correspondents weigh in on the first Biden-Trump debate.

Anticipation is building for President Joe Biden and GOP front-runner Donald Trump’s first presidential debate tonight. ABC News’ Rachel Scott, Katherine Faulders and Mark Updegrove join the show.

ABC News' Perry Russom looks at the candidates’ strategies with inflation, border security and democracy expected to be among the key issues.

ABC News' contributor Mary Jordan analyses the top objectives that President Biden and former President Trump are likely to debate over at the presidential debate this evening.

White House correspondent Maryalice Parks and political director Rick Klein discuss Biden and Trump facing off in Atlanta for the first presidential debate of the 2024 election.

ABC News' Galen Druke, host of the "FiveThirtyEight" Politics podcast, discusses how the numbers provide context to voters' views of the two candidates.

President Joe Biden and former President Donald Trump will face off tonight in a presidential debate -- a rematch between the two candidates, but their first in 2024.

ABC News’ Linsey Davis speaks with a former senior adviser to Sen. Tim Scott’s (R-SC) campaign, Matt Gorman, before the presidential debate where both sides seek to gain support in a tight race.

Former President Donald Trump and President Joe Biden are set for the first of two debates. Former speechwriter for President Clinton, Michael Waldman, breaks down strategies for both sides.

With only one day left until the first presidential debate, our Big Story Panel, joined by Michael Waldman, weighs in. Later, we spotlight a Supreme Court ruling that could be a major misstep

Former Republican Rep. Adam Kinzinger has endorsed President Joe Biden

Will the June 27 presidential debate between Donald Trump and Joe Biden matter in the polls?

ABC News' Rachel Scott discusses the anticipated first 2024 presidential debate, the tension between Donald Trump and Joe Biden, and the importance of immigration in the upcoming election.

President Joe Biden has been doing formal 90-minute mock debates at Camp David and has also gained the endorsement of Republican and former Rep. Adam Kinzinger.

Candidates, such as Donald Trump and President Joe Biden in 2024, are vying for smaller groups of undecided voters who watch the debates, experts say.

In two court rulings Monday night, federal judges in Kansas and Missouri halted key aspects of President Joe Biden's sweeping student loan repayment program.

Federal judges stopped the Biden administration from further implementing the SAVE program, but are allowing people who are enrolled to keep using it until the cases are fully litigated.

Joe Biden and Donald Trump are working to meet vastly different expectations at Thursday's debate -- expectations that, for each, have been largely set by Republicans.

When Joe Biden and Donald Trump face each other on stage in Atlanta, it will mark the first time a sitting president and former president have ever debated.

With a week until the first presidential debate, President Joe Biden heads to Camp David on Thursday to prepare for his match up with former President Donald Trump.