In a phone call with Fox News Digital, Trump said the debate performance from his running mate "reconfirmed my choice."

"JD was fantastic last night -- it just reconfirmed my choice," Trump said. "There was a brilliance to what he did."

The comments came after Vance's rocky rollout in the weeks after becoming Trump's VP pick. At one point, Trump said he believed vice presidential selections had "virtually no impact" on the election.

"On the other hand, Tim Walz proved to be a man that doesn't have it in any way shape or form for the office that he is seeking, though I would put him a large number of steps above Kamala," Trump said.

The former president also continued his baseless, personal attacks on Harris and Walz's mental acuity.

"This is what the country needs; smart people, not people that can't put two sentences together," Trump said. "We have to take our country back."

Just hours after last night's debate, the Harris campaign launched a new ad slamming Vance over his answer to a question about Jan. 6 in a moment they consider to be a highlight of Tuesday's vice-presidential debate.

In the 30-second clip titled "JD Vance's Damning Non-Answer," Vance refuses to clarify if he thinks Trump lost the 2020 election. It is part of the campaign's $370 million fall media push and will air digitally across battleground states.

Michael Tyler, a Harris spokesperson, was asked by CNN Wednesday morning if the Jan. 6 exchange was something Walz wanted to talk about or if it was something that just happened in the moment.

"I think the governor was prepared to make sure that the voters understood that Donald Trump remains a risky bet for the American people,"

Read more about the biggest clash of the debate here.

ABC News' Gabrielle Abdul-Hakim, Fritz Farrow and Will McDuffie

In an interview with Atlanta'slocal ABC station, WSB, which aired on Tuesday night, Harris discussed Tuesday’s missile attack on Israel by Iran and the federal response to Hurricane Helene.

“So, I was actually in the Situation Room today with the president for several hours with our national security team,” said Harris on Tuesday. “It is important that we as the United States stand with Israel and its right to defend itself, especially against Iran, which poses a threat to American interest American personnel in the region.”

Harris also told the reporter that the government is sending supplies to Georgia following Hurricane Helene.

“I have been in touch with the governor. Actually I spoke with him. I've been getting regular briefings at FEMA,” before refuting Trump’s claims that President Joe Biden’s administration has not been moving supplies in fast enough.

“We’ve got boots on the ground in Georgia. There has been a big effort that we have made to make sure that we get food, water and generators to folks who need that after the hurricane.”

-ABC News' Gabriella Abdul-Hakim, Fritz Farrow and Will McDuffie

Vice President Kamala Harris condemned Iran's attack against Israel calling it "reckless and brazen," and labeling Iran “a destabilizing, dangerous force in the Middle East.”

The vice president said that while American officials are "still assessing the impact," and that "initial indications are that Israel, with our assistance, was able to defeat this attack."

“This operation and successful cooperation saved many innocent lives,” she said.

"My commitment to the security of Israel is unwavering," Harris said.

-ABC News' Will McDuffie, Gabriella Abdul-Hakim and Fritz Farrow