Former Rep. Liz Cheney lavished praise on Vice President Kamala Harris Sunday and called her nomination address “a speech that Ronald Reagan could have given.”

Cheney, a Wyoming Republican and rival of former President Donald Trump, commended Harris’ address to the Democratic National Convention in Chicago last month as she explained why she defended her decision to vote against the GOP nominee this year.

“If you look at Vice President Harris’ speech, for example, at the Democratic Convention, it is a speech that Ronald Reagan could have given. It’s a speech that George Bush could have given,” Cheney told ABC News’ “This Week” on Sunday.

Cheney said the vice president casted herself as a hardliner on foreign policy and vowed to ensure the US has the “strongest, most lethal fighting force in the world” during the speech.

“It’s very much an embrace and an understanding of the exceptional nature of this great nation. A love of America. A recognition that America is a special place.”

During the convention in Chicago, Democrats heard from several anti-Trump Republicans, including former Rep. Adam Kinzinger (R-Ill.), who opted not to vie for reelection in 2022 after redistricting dimmed his chances of retaining his seat. Kinzinger had been something of a kindred spirit to Cheney.

The Cheney scion juxtaposed Harris’ performance sharply with Trump, whom she blasted for “trash-talking” the US as “a failing nation” and “a laughing stock.”

Cheney had been the chairwoman of the House Republican Conference from 2019 to 2021, which was the third-highest ranking GOP position in the lower chamber at the time, given the party’s minority status.

But she was pushed out by her own party for her admonishment of the Jan. 6 Capitol riot and Trump. Cheney served as the vice chair of the since-defunded House Select Jan. 6 Committee. Cheney and Kinzinger were the only Republicans on that panel.

In 2022, she was edged out in a Republican primary by Trump-endorsed Rep. Harriet Hageman (R-Wyo.) during the midterm elections, having been high up on the former president’s list for revenge.

“The trash-talking of the United States of America very much is part of the message that Donald Trump is pushing, and so at the end of the day, I think it’s important for people to recognize he’s not a conservative,” Cheney stressed.

The 58-year-old professor at the University of Virginia Center for Politics, had previously panned Harris prior to the 2024 election cycle. Following her endorsement of Harris last week, critics unearth some of those criticisms.

“Kamala Harris is a radical liberal and supports dangerous policies that would devastate millions of Americans,” Cheney wrote on X back in 2020.

Cheney reflected Sunday that Harris has since deviated from some of the hardline progressive stances that she took during her 2020 bid for the presidency.

“She’s learned as vice president, listen to her talk about her vision for this country, her vision for the future,” Cheney said.

“When it comes to fundamental alliances, when it comes to the importance of NATO, for example, and how important it is for the United States to lead in the world, we’ve seen a sea change. We now have a Republican Party that is embracing isolationism, that is embracing Putin,” she added.

Harris has softened her stance on issues such as Medicare for all, the Green New Deal, a ban on franking, a ban on plastic straws, and more.

Cheney also revealed that her father — former Vice President Dick Cheney — plans to vote for Harris as well.

That led to backers of Trump to quickly rekindle their well-worn attacks on the Cheney for being “war hawks” — a reference to Dick Cheney’s role in the Second Iraq War.

“Dick Cheney has just made the choice very clear. A vote for Kamala Harris is a vote for Dick Cheney, the architect of everything that has gone wrong in the Middle East for the last few decades,” former Rep. Tulsi Gabbard (D-Hawaii), who is backing Trump, said.

Harris has welcomed the Cheneys’ stamp of approval.

“I’m honored to have their endorsement,” Harris said during a campaign stop before praising them for putting “the country above party.”

The vice president has boasted about the Republican support she racked up and has indicated that she’d put someone from the GOP in her Cabinet if she wins the Nov. 5 election.

Cheney explained that she spoke to Harris “in the process” of making her endorsement, without providing additional details. She also hearkened back to her first vote in 1984 — for former President Ronald Reagan.

“Donald Trump doesn’t stand for any of the things that Ronald Reagan did, and it’s another place that I would urge my Republican colleagues both in the Congress, but across the country to really look at Donald Trump’s policies, to really look at the danger that he presents, to look at, you know, what he was willing to do to stay in power,” Cheney argued.

“It’s a firm rejection not just of traditional Republican policies, but of the constitutional order on which this country depends.”

At one point, Cheney sidestepped a question about whether she classifies herself as a Republican, calling herself a “conservative.”

“I’m certainly not a Trump Republican. I’m a conservative,” Cheney explained. “I think that what’s happened to the Republican Party today is indefensible, and I hope to be able to rebuild as I said, after this cycle.”