Sen. Claire McCaskillClaire Conner McCaskillHow Citizens United altered America's political landscape #MidnightMoscowMitch trends amid criticism of McConnell's proposed impeachment trial rules The most expensive congressional races of the last decade MORE (D-Mo.) says Democratic National Committee (DNC) Chairwoman Debbie Wasserman Schultz must decide her own role in the dwindling days of the Democratic presidential primary.

“Debbie has to make a decision going forward, because what we all have to focus on going forward is how we unite and how we defeat Donald TrumpDonald John TrumpTrump says his advice to impeachment defense team is 'just be honest' Trump expands tariffs on steel and aluminum imports CNN's Axelrod says impeachment didn't come up until 80 minutes into focus group MORE,” she said on MSNBC’s “Morning Joe.”

ADVERTISEMENT

“Fair or unfair, she is to many of the Bernie [Sanders] supporters somebody who really gets them riled up,” McCaskill added.

The Hill reported Tuesday that Democrats are debating whether the Florida Democrat should vacate her role as DNC chairwoman.

“We can argue about why that is or if it’s fair that that’s the case, but this will ultimately be up to Debbie. I think we all need to figure out how to get along. We’ve got to land this plane,” McCaskill said.

Critics say Wasserman Schultz’s handling of the presidential primary has alienated Sanders and his supporters, risking unity ahead of the general election this fall.

A top aide to Sanders on Wednesday said he would support Wasserman Schultz stepping down.

“Someone else could play a more positive role,” campaign manager Jeff Weaver said on CNN.

But McCaskill on Thursday said there is no Democratic support for Wasserman Schultz’s ouster.

“No one is calling on Debbie Wasserman Schultz to step down,” she said. "I don’t think anybody is trying to move Debbie out.

“I think there’s going to be a lot of back and forth between Bernie and his campaign and Hillary ClintonHillary Diane Rodham ClintonSanders to Clinton: 'This is not the kind of rhetoric that we need' Sekulow vows Bidens, Ukraine will be part of Trump impeachment defense Elizabeth Warren: More 'Hillary' than Hillary MORE and her campaign and all of this will get worked out,” added McCaskill, who has previously endorsed Clinton.

McCaskill added that a united front is essential for Democrats if they want to keep Trump from the presidency.

“I’m confident it will get worked out because we can’t have a reality TV star that has no concept of public policy set foot in the Oval Office,” she said of the GOP’s presumptive presidential nominee. "He cannot have the nuclear codes.”

Clinton remains the Democratic presidential front-runner nationwide, boasting 1,768 delegates to Sanders’s 1,497. At least 2,382 are needed for avoiding a contested convention in July.