CNN host Don Lemon on Friday night echoed portions of former President Obama's speech earlier in the day blasting President Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE.

"That is a great question. 'What happened to the Republican Party?' " Lemon said on his show, using a phrase Obama used during his speech at the University of Illinois.

The CNN host played several video clips of GOP senators and Trump allies previously criticizing Trump before his electoral victory.

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Lemon showed an old clip of Sen. Lindsey Graham Lindsey Olin GrahamSenate GOP aims to confirm Trump court pick by Oct. 29: report The Hill's Campaign Report: GOP set to ask SCOTUS to limit mail-in voting Senate GOP sees early Supreme Court vote as political booster shot MORE (R-S.C.) calling Trump a “kook” who was “unfit” for office, comparing it a November 2017 clip of Graham criticizing the media for labeling Trump a “kook.”

“He’s the one who said ‘kook’ in the first place,” Lemon laughed. “You can’t make this up.”

"How the Republican party has changed." CNN's @DonLemon plays flashbacks of Republican attacks on presidential candidate Donald Trump pic.twitter.com/BJ5PDSkO4z — CNN Tonight (@CNNTonight) September 7, 2018

Lemon also pointed to the relationship between Trump and Sen. Ted Cruz Rafael (Ted) Edward CruzTrump argues full Supreme Court needed to settle potential election disputes Press: Notorious RBG vs Notorious GOP The Hill's Morning Report - Sponsored by Facebook - Washington on edge amid SCOTUS vacancy MORE (R-Texas), who were fierce rivals during the 2016 Republican presidential primary.

The host noted that Trump suggested during the campaign that Cruz's father was involved in the John F. Kennedy assassination and retweeted a tweet critical of Cruz's wife's appearance.

“It’s not easy to tick me off,” Cruz said in a 2016 clip aired by CNN. “I don’t get angry often. But you mess with my wife, you mess with my kids, that’ll do it every time. Donald, you’re a sniveling coward and leave Heidi the hell alone.”

Lemon compared Cruz’s 2016 rhetoric to a glowing piece the Texas senator wrote about Trump for Time magazine's list of the 100 most influential people earlier this year.

The CNN host also showed a video clip of presidential adviser Kellyanne Conway Kellyanne Elizabeth ConwaySpecial counsel investigating DeVos for potential Hatch Act violation: report George and Kellyanne Conway honor Ginsburg Trump carries on with rally, unaware of Ginsburg's death MORE, one of Trump's fiercest defenders, previously criticizing Trump's attacks on Heidi Cruz during the GOP primary.

“My, how things have changed, my how the Republican Party has changed,” Lemon said Friday. “You heard them tell us, before the election, what to expect from Donald Trump. You heard President Obama tell us. And you’ve heard and you’ve seen President Trump.”

Lemon praised portions of Obama's speech Friday going after Trump, including Obama's line calling out his successor for his rhetoric following the white nationalist rally in Charlottesville, Va., last year.

"We’re supposed to stand up to discrimination and we’re sure as heck supposed to stand up clearly and unequivocally to Nazi sympathizers," Obama said. "How hard can that be? Saying that Nazis are bad."

"Amen, Barack Obama Barack Hussein ObamaMichelle Obama and Jennifer Lopez exchange Ginsburg memories Pence defends Trump's 'obligation' to nominate new Supreme Court justice The militia menace MORE," Lemon echoed.