Staffers for GOP Sen. Chuck Grassley Charles (Chuck) Ernest GrassleyGOP lawmakers distance themselves from Trump comments on transfer of power The Hill's 12:30 Report: Ginsburg lies in repose Top GOP senators say Hunter Biden's work 'cast a shadow' over Obama Ukraine policy MORE (Iowa), the chairman of the Judiciary Committee, are fielding heated phone calls amid backlash over Brett Kavanaugh's Supreme Court nomination.

One caller told a staffer who was answering phones in Grassley's office that the GOP senator was a "f---ing piece of 's---" and added that the aide was also a "piece of s---."

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"He can’t die from a heart attack soon enough," the caller added, according to examples provided by Grassley's office to reporters about what has been said to staffers who answer the front desk phones.

Another caller told an aide that they "hope you get raped so you can understand what that woman is going through.” While another called a Grassley staffer "racist trash."

An aide said such calls were first made to the office last week.

According to that timeline, the first calls would have been made in the early days after Christine Blasey Ford became the first woman to go public with her allegations of sexual assault against Kavanaugh. Ford detailed her allegations in an interview published in The Washington Post on Sept. 16.

The calls also come at a time when the committee has found itself in the middle of a deeply partisan fight over Kavanaugh's Supreme Court nomination.

Kavanaugh and Ford are scheduled to testify before the committee on Thursday. Ford alleges that Kavanaugh pinned her to a bed at a high school party in the early 1980s and tried to remove her clothes.

A second woman, Deborah Ramirez, told The New Yorker in an interview published on Sunday that Kavanaugh exposed himself to her when they were students at Yale University.

On Wednesday, lawyer Michael Avenatti released of the identity of a client who is accusing Kavanaugh of being present for a “gang rape” in which she says she was a victim.

Avenatti, who also represents adult-film star Stormy Daniels in her lawsuits against President Trump Donald John TrumpSteele Dossier sub-source was subject of FBI counterintelligence probe Pelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' Trump 'no longer angry' at Romney because of Supreme Court stance MORE, tweeted out a sworn declaration from Julie Swetnick in which she declares she met Kavanaugh in “approximately 1980-1981” and attended several house parties at which Kavanaugh and his friend Mark Judge were also present. She has also alleged that Kavanaugh groped women.

Kavanaugh has denied each of the accusations.

Grassley isn't the only senator who has received profane or threatening phone calls.

GOP Sen. Jeff Flake Jeffrey (Jeff) Lane FlakeHow fast population growth made Arizona a swing state Jeff Flake: Republicans 'should hold the same position' on SCOTUS vacancy as 2016 Republican former Michigan governor says he's voting for Biden MORE (Ariz.) said during a Senate floor speech on Wednesday that a man called his office saying that he and his family "would be 'taken out'" over his rhetoric on Kavanaugh's Supreme Court nomination.

Spokespeople for Sens. Susan Collins Susan Margaret CollinsThe Hill's Campaign Report: Trump faces backlash after not committing to peaceful transition of power Billionaire who donated to Trump in 2016 donates to Biden Credit union group to spend million on Senate, House races MORE (R-Maine) and Dianne Feinstein Dianne Emiel FeinsteinTrump faces tricky choice on Supreme Court pick The Hill's Morning Report - Sponsored by Facebook - Trump previews SCOTUS nominee as 'totally brilliant' Abortion stirs GOP tensions in Supreme Court fight MORE (D-Calif.) have also spoken about receiving “vulgar” and threatening calls and mail.

Flake and Collins are both swing votes on the Kavanaugh nomination. Feinstein is the top Democrat on the Judiciary Committee.