Ford told the Post that Kavanaugh and a friend - both "stumbling drunk", she says - corralled her in a bedroom when she was around 15 and Kavanaugh was around 17. Chuck Grassley of Iowa, was trying to arrange separate, follow-up calls with Kavanaugh and Ford, but just for aides to Grassley and Sen.
Christine Blasey Ford, a professor of psychology at Palo Alto University, detailed her allegations in the Washington Post at the weekend.
In a statement on Friday, Kavanaugh denied the reported allegations that while at a party during his time in high school, he pushed a woman into a room, locked the door to the room along with another male and tried to take off the woman's clothes. Over the past few months, Ford has felt pressure on a personal level to share her story and has grappled with the idea, which partly prompted the letter, the source said.
"This is a remarkable moment with echoes of the past, but also stark differences", said Nan Aaron, the founder and president of the Alliance for Justice, a liberal judicial advocacy group, "I can tell you, every woman in America will be watching how this unfolds". She contacted her congressmember and The Washington Post through a tip line.
Ford said she kept silent about the alleged incident until she was in couples' therapy with her husband in 2012.
Kavanaugh later issued a fresh denial of the allegations, which have roiled his confirmation process, saying he is willing to talk to the committee in any way it "deems appropriate". Richard Blumenthal, both members of the committee, likewise demanded a delay on the confirmation vote until further investigation.
Republicans say the allegations have already cast a shadow over Mr Kavanaugh but that it does not appear to be enough to change the votes in the narrowly divided 51 - 49 Senate.
Kavanaugh's supporters have questioned why the allegations surfaced only after he underwent four days of questioning in early September.
"This is a completely false allegation", Kavanaugh said in a statement Monday morning. As of Sunday afternoon, Senate Judiciary Committee Chairman Chuck Grassley meant to move forward with the committee vote as planned. She took, and passed, a polygraph.
The allegation first came to light late last week in the form of a letter that has been in the possession of Senator Dianne Feinstein of California, the top Democrat on the Senate Judiciary Committee, for some time.
Last week, Kavanaugh, Republican president Donald Trump's second nominee for a lifetime appointment to the nation's highest court, said he "categorically and unequivocally" denies the allegations.
"As former staffers who were there at the time, we find this testimony preposterous", they wrote, describing how judicial nominations "were full-fledged and often bitter on both sides", so Democratic staff members would hardly be cooperative.
The head of the private high school attended by a woman who has accused Supreme Court nominee Brett Kavanaugh of assaulting her issued a statement in support of the accuser. Susan Collins (R-Maine) told reporters Monday on Capitol Hill, calling for testimony from Kavanaugh and Ford.
Nearly the exact same series of events occurred in 1991, when law professor Anita Hill came forward to testify that then Supreme Court nominee Clarence Thomas sexually harassed her when she was assisting Thomas at the Department of Education in 1981.
During the NBC interview, Katz characterized Kavanaugh's actions as "attempted rape", adding that her client feels "that if it were not for the severe intoxication of Brett Kavanaugh, she would have been raped".