Sen. Amy Klobuchar Amy KlobucharBattle lines drawn on precedent in Supreme Court fight Sunday shows - Ruth Bader Ginsburg's death dominates Klobuchar: GOP can't use 'raw political power right in middle of an election' MORE (D-Minn.) is facing scrutiny over her treatment of congressional staff and her workplace demeanor, just days ahead of her decision about whether she will run for president in 2020.

A number of former staffers who worked for Klobuchar spoke anonymously to BuzzFeed News, accusing the senator of often berating staff over small mistakes and creating a hostile work environment.

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BuzzFeed interviewed eight former aides and reviewed dozens of emails.

A spokesperson for Klobuchar did not immediately respond to a request for comment from The Hill.

BuzzFeed reported that Klobuchar often yelled, threw papers and flung objects and aides were regularly left in tears, citing four former staffers.

One staffer was hit with a binder, though Klobuchar did not mean to hit the person, somebody who saw the incident told the publication.

“I cried. I cried, like, all the time,” one former staffer told BuzzFeed.

Klobuchar will announce her decision about whether she will run for the Democratic presidential nomination on Sunday in Minneapolis.

She’s been considering a presidential run for months, but has signaled a likely bid amid news that she’ll be headlining a local Democratic banquet in Iowa on Feb. 21.

In emails reviewed by BuzzFeed, Klobuchar told staff their work was “the worst in ... years,” and “the worst in my life.”

In several emails, she reportedly criticized staffers, writing in all capital letters, after they made what they believed to be small mistakes or misunderstood her.

However, BuzzFeed also quoted staff who defended her.

Some previous aides spoke to BuzzFeed on the record to defend and praise Klobuchar as a boss.

Kali Cruz, who worked in Klobuchar’s office during her first Senate term, said that the Minnesota Democrat “cared deeply for me as her staffer,” adding that Klobuchar threw a baby shower for Cruz when she was pregnant.

A campaign spokesperson also defended Klobuchar.

"Senator Klobuchar loves her staff — they are the reason she has gotten to where she is today,” the campaign spokesperson for Klobuchar told BuzzFeed.

“She has many staff who have been with her for years — including her Chief of Staff and her State Director, who have worked for her for 5 and 7 years respectively, as well as her political advisor Justin Buoen, who has worked for her for 14 years — and many who have gone on to do amazing things, from working in the Obama Administration (over 20 of them) to running for office to even serving as the Agriculture Commissioner for Minnesota.”

The BuzzFeed story comes on the heels of a report from The Huffington Post that three potential candidates to lead her nascent presidential campaign declined the job, citing the mistreatment of staff.

If Klobuchar jumps into the race, she will be the fifth U.S. senator to run for president, joining Sens. Cory Booker Cory Anthony BookerBipartisan praise pours in after Ginsburg's death DHS opens probe into allegations at Georgia ICE facility Democratic lawmakers call for an investigation into allegations of medical neglect at Georgia ICE facility MORE (D-N.J.), Kirsten Gillibrand Kirsten GillibrandSunday shows preview: Justice Ginsburg dies, sparking partisan battle over vacancy before election Suburban moms are going to decide the 2020 election Jon Stewart urges Congress to help veterans exposed to burn pits MORE (D-N.Y.), Elizabeth Warren Elizabeth WarrenJudd Gregg: The Kamala threat — the Californiaization of America GOP set to release controversial Biden report Biden's fiscal program: What is the likely market impact? MORE (D-Mass.) and Kamala Harris Kamala HarrisJoe Biden looks to expand election battleground into Trump country Fox's Napolitano: Supreme Court confirmation hearings will be 'World War III of political battles' Rush Limbaugh encourages Senate to skip hearings for Trump's SCOTUS nominee MORE (D-Calif.).

She’d be the second presidential candidate to hail from the Midwest, though Sen. Sherrod Brown Sherrod Campbell BrownBipartisan praise pours in after Ginsburg's death Emboldened Democrats haggle over 2021 agenda Hillicon Valley: Russia 'amplifying' concerns around mail-in voting to undermine election | Facebook and Twitter take steps to limit Trump remarks on voting | Facebook to block political ads ahead of election MORE (D-Ohio) is still considering a bid and currently touring early primary states.