For the most part, tonight's debate revealed nothing new about what Biden and Trump think on major issues from the economy, immigration, foreign policy and reproductive rights.

Each candidate reiterated positions they've already touted countless times on the campaign stump.

Instead, they largely focused on criticizing each other's past records and lobbing personal attacks.

Vice President Kamala Harris reacts to the CNN President Debate of President Joe Biden and former President Donald Trump.

Though asked three times, former President Donald Trump never directly affirmed that he would accept the election results, no matter who wins.

Several times Trump noted that he would accept the results "if it's a fair and legal and good election" but wouldn't give a yes or no answer to moderator Dana Bash's inquiries.

The follow-ups came after Trump ultimately denounced political violence as "totally unacceptable."

After the moderator asked Trump three times whether he would accept the results of the November election, Joe Biden responded that he doubted Trump would "because you're such a whiner."

Biden noted there was no evidence of any widespread fraud in the 2020 election and that multiple courts had dismissed challenges brought by Trump's campaign.

In his two-minute closing argument, Trump went after Biden's record abroad in a personal attack.

"They don't respect you throughout the world," he said.

Trump said he had the largest tax cut and the largest regulation cuts in history, but the country is now "exploding."

"We're a failing nation, but it's not going to be failing anymore," he said. "We're going to make it great again."

"We have made significant progress from the debacle that was left by President Trump in his last term," Biden said.

Biden then went on to summarize some of his signature policies. On the economy, he vowed he will not raise taxes on anyone making under $400,000 a year and to continue his work to reduce health care costs, child care costs and give families financial breathing room.

"We're going to continue to fight to bring down inflation and give people a break," Biden said in closing.