South Bend, Ind., Mayor Pete Buttigieg Pete ButtigiegBillionaire who donated to Trump in 2016 donates to Biden The Hill's Morning Report - Sponsored by Facebook - GOP closes ranks to fill SCOTUS vacancy by November Buttigieg stands in as Pence for Harris's debate practice MORE and Sen. Amy Klobuchar Amy Klobuchar3 reasons why Biden is misreading the politics of court packing Social media platforms put muscle into National Voter Registration Day Battle lines drawn on precedent in Supreme Court fight MORE (D-Minn.) laid out their criteria for picking federal court nominees in a rare round of questions about the judiciary at Thursday's Democratic presidential debate.

The candidates were asked how they would approach nominating judges given the success that President Trump Donald John TrumpBiden says voters should choose who nominates Supreme Court justice Trump, Biden will not shake hands at first debate due to COVID-19 Pelosi: Trump Supreme Court pick 'threatens' Affordable Care Act MORE has had in shifting the judiciary to the right with the help of rapid confirmations by the GOP-controlled Senate.

“I would appoint judges who are in the vein of people like Elena Kagan Elena KaganREAD: Supreme Court justices mourn death of Ginsburg, 'an American hero' Democrats, advocates seethe over Florida voting rights ruling Supreme Court denies push to add Green Party candidates to Montana ballot MORE, and Justice [Stephen] Breyer, and Sonia Sotomayor Sonia SotomayorToomey, swing state Republican, supports Senate moving on Trump Supreme Court nominee Names to watch as Trump picks Ginsburg replacement on Supreme Court READ: Supreme Court justices mourn death of Ginsburg, 'an American hero' MORE, and let's not forget the Notorious RBG,” Klobuchar said, using the nickname for Justice Ruth Bader Ginsburg Ruth Bader GinsburgBiden says voters should choose who nominates Supreme Court justice Pelosi: Trump Supreme Court pick 'threatens' Affordable Care Act Watch live: Trump holds campaign rally in Pennsylvania MORE.

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Klobuchar added that the next Democratic president will need to make judicial confirmations more of a priority than previous administrations have.

“That is one thing that we all learned from when President Obama was in, and that was that he was dealing with an economic crisis and it was hard to do it right away. But we have to immediately start putting judges on the bench to fill vacancies so that we can reverse the horrific nature of these Trump judges,” she said.

Buttigieg, who has made the most explicit push of any White House hopeful to reform the courts, said he would nominate judges and justices who value civil rights.

“It is critical that we have justices who understand that American freedom includes reproductive rights and reproductive freedom, but that's not all,” he said. “I expect an understanding that voting rights are human rights. I expect an understanding that equality is required of us all.”

“And I expect a level of respect for the rule of law that prevents this body from coming to be viewed as just one more partisan battlefield, which is why I will not only appoint judges and justices who reflect this worldview, but also begin moving to reform the body itself as our country has done at least half a dozen times in its history so that it is not one more political battlefield every single time a vacancy comes up,” he added.

Buttigieg has floated the idea of packing the Supreme Court with additional seats for justices and other steps designed to make federal courts less partisan.

The court questions at Thursday's debate came a day after the Fifth Circuit Court of Appeals ruled that a key tenet of the 2010 Affordable Care Act, the individual mandate, is unconstitutional. Democratic attorneys general have already vowed to appeal the ruling to the Supreme Court.