Former 2020 presidential hopeful Sen. Elizabeth Warren will withhold an endorsement of either Sen. Bernie Sanders or former Vice President Joe Biden and instead let the primary process play out on its own, according to a report.

Warren (D-Mass.) is “unlikely” to endorse fellow progressive Sanders (I-Vt.), even though he is currently reaching for political lifelines to save his campaign, several people close to her told the New York Times.

The Massachusetts senator’s endorsement became highly coveted after she dropped out of the Democratic presidential primary last week, when she delivered a disappointing performance in Super Tuesday contests that included a devastating third-place finish in her home state.

Warren, who could undoubtedly assist Sanders in uniting the progressive wing of the party, neglected to immediately offer an endorsement of either of the two remaining major candidates as many progressives hoped she would.

Instead, she said she had decided she wants to “take a deep breath and spend a little time on that,” before rushing into either candidate’s corner.

Warren and Sanders became embroiled in multiple feuds as a result of being competitors on the campaign trail, which led to fraying between both the senators and their supporters.

After announcing her decision to not offer an endorsement, Warren made comments critical of her former ally in an interview with MSNBC’s Rachel Maddow.

Warren claimed that so-called Bernie Bros, as Sanders’ staunchest supporters have come to be known, posted the home addresses and phone numbers of numerous women of color who worked for or ran groups that had either endorsed her or not endorsed Sanders.

The move, she said, led to an “onslaught of online threats.”

The Massachusetts progressive was adamant that the candidate himself bore some responsibility for his supporters, who were acting in an effort to support Sanders.

“I wanna say this for all of the candidates, back when there were lots of us, we are responsible for the people who claim to be our supporters and do really threatening, ugly, dangerous things,” she remarked.

When asked by Maddow if this was a particular problem with the Democratic socialist’s supporters, Warren answered with an adamant yes.

“It is, it just is.”

On Saturday, one Senate insider told The Post that Warren is looking past 2020 when considering an endorsement.

“The long and short of it is she has not ruled out a future that involves running for president,” the insider said. “She will be 74 in 2024 and that is a realistic variable. She and the people around her are weighing it.”

A spokesperson for Warren did not immediately respond to The Post’s request for comment.