We are just one day out from Vice President Kamala Harris and former President Donald Trump coming face to face in their first presidential debate together.

Vice President Kamala Harris is preparing for the debate at a Pittsburgh hotel, doing mock debates and leaning on several advisers who helped Hillary Clinton prep for her 2016 debate against Trump.

The 538 national polling average has Vice President Kamala Harris up by about three percentage points over former President Donald Trump.

Former President Donald Trump and Vice President Kamala Harris are set to face off in their first debate next week, moderated by ABC News.

In the past, presidential debates have made a small impact on elections, but this year's unprecedented election cycle has changed the game, according to experts.

Kamala Harris and Donald Trump will be walking political tightropes as each tries to persuade millions of voters and viewers to back them.

Trump's advisers may have publicly insisted he doesn't need any debate prep, but the former president is preparing more than he's letting on, sources tell ABC News.

ABC News' White House correspondent MaryAlice Parks with the latest on Vice President Harris and former President Trump's presidential debate preparations and poll numbers.

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

Chris Christie and Donna Brazile break down the latest news on “This Week.”

ABC News’ Jonathan Karl interviews Gov. Sarah Huckabee Sanders, R-Ark., on “This Week.”

Robert Kelly, president of the Howard University Speech and Debate Team, and Alexandra Uy-Tioco, vice president of the Penn Debate Society, join ABC News Live to talk about the upcoming debate.

ABC News’ Jonathan Karl interviews former Rep. Liz Cheney, R-Wyo., on “This Week.”

ABC News' debate panel Cristina Tzintzún Ramirez and Alexa Henning discuss strategies for Kamala Harris and Donald Trump in the upcoming presidential debate.

Former Rep. Liz Cheney, R-Wyo., slammed former president Donald Trump as an "unrecoverable catastrophe" in her call for other Republicans to vote against him this year.

Arkansas Gov. Sarah Huckabee Sanders said the ABC News presidential debate on Tuesday is more important for Harris than Trump.

Former President Donald Trump held a rally in battleground state Wisconsin as Vice President Kamala Harris prepared for their first presidential debate, which is just two days away.

Former President Donald Trump posted a warning on his social media site threatening to jail those “involved in unscrupulous behavior” this election, which he said would be under intense scrutiny

The second presidential debate will give voters a rare opportunity to see two candidates with history in the Oval Office square off.

Former President Donald Trump held a campaign rally in Wisconsin while Vice President Kamala Harris prepared in Pittsburgh ahead of Tuesday's presidential debate.

A New York judge delayed the sentencing in Trump’s hush money trial until after the election.

ABC News’ White House Correspondent MaryAlice Parks breaks down how Kamala Harris and Donald Trump are strategizing ahead of Tuesday's debate.

The judge in former President Donald Trump's criminal hush money case has delayed his sentencing from Sept. 18 to until Nov. 26, after the presidential election.

Judge Tanya Chutkan is expected to consider competing proposals for how the case should proceed following the Supreme Court's ruling granting broad immunity for official acts taken by presidents.

The judge in former President Donald Trump's criminal hush money case postpones sentencing until after the November election.

The former president, through his attorneys, entered a plea to charges in the superseding indictment in his election interference case, as the case resumed following months of delays.

The former president denied that he had met Carroll and verbally attacked other women who testified against him during the trial.

With Donald Trump sitting in the courtroom, a federal appeals court appeared skeptical of his push for a new trial in the E. Jean Carroll defamation and assault case.

Donald Trump announced a major role in his administration for Elon Musk, promising to put him at the head of a new government commission to crack down on fraud and waste.

Donald Trump is expected to be in court Friday for oral arguments in his appeal of a 2023 judgment holding him liable for sexually abusing E. Jean Carroll, sources say.

Donald Trump rambled for nearly an hour about the E. Jean Carroll case and the accusations brought against him by two other women, Jessica Leeds and Natasha Stoynoff.

Former Trump White House lawyer Ty Cobb shares his thoughts on the status of Donald Trump's legal woes from the hush money case to election interference.

She will paint him as dark and divisive versus herself as forward-looking.

The New York judge overseeing former President Trump's hush money case will decide Friday whether to delay his Sept. 18 sentencing, according to a court filing Thursday.

The debate will be held at the National Constitution Center in Philadelphia.

With less a week until ABC News' Sept. 10 debate between Kamala Harris and Donald Trump, the network on Wednesday released the rules for the matchup.

Former President Donald Trump is once again brushing aside traditional debate preparations.

After months of delays, a federal judge is set to hold a hearing Thursday that could determine the trajectory of former President Trump's election interference case.

Donald Trump sat down with Sean Hannity and a cheering crowd in battleground Pennsylvania ahead of next week's ABC News debate.

Former President Donald Trump’s youngest son, Barron Trump, has begun his first year of college this week at New York University, his father said Wednesday

Former Wyoming Republican congresswoman Liz Cheney announced Wednesday that she will vote for Vice President Kamala Harris against former President Donald Trump.

During an interview, former President Donald Trump said he plans to “feel it out” as the debate goes along while Vice President Kamala Harris is expected to focus on debate prep starting later today.

While Kamala Harris and Donald Trump are campaigning for the White House, there are several other key races for U.S. Senate seats. Sen. Schumer discusses the presidential and various Senate races.

A federal judge on Tuesday ordered Donald Trump to temporarily stop using the song "Hold On, I'm Coming," co-written by Isaac Hayes, at his events.

Former President Trump has waived his right to be present at his arraignment in his new election interference case and says he will enter a plea of not guilty.

Vice President Kamala Harris will be in New Hampshire to outline her small business plan before focusing on debate prep while former President Donald Trump will focus on policy review with advisors.

A federal judge has denied former President Trump's second attempt to remove his New York hush money case from state court into federal court.

The high-stakes ABC News debate is just a week away. Harris has held at least two mock debates, while former Trump is meeting with policy advisers and is forgoing formal prep.

A federal judge in Atlanta has ruled that Donald Trump and his campaign must stop using the song “Hold On, I’m Coming.”

A judge in Atlanta ruled that Donald Trump, and his campaign must stop using the song. Family of the song's co-writer, Isaac Hayes Jr., said the song was used without permission.