On the topic of why she has chosen to come forward, she will say in her statement, which can be read here.
On the eve of the hearing, where Kavanaugh will also appear following Ford's testimony, attorney Michael Avenatti revealed the identity of a third woman, Julie Swetnick, who claims Kavanaugh was involved in "gang rape" during a party in high school.
Kavanaugh has denied the allegation.
Judge Kavanaugh has yet to respond formally to this specific allegation.
Ford, a psychology professor at Palo Alto University in California, has said a drunk Kavanaugh attacked her and tried to remove her clothing at a gathering of teenagers in Maryland when he was 17 years old and she was 15. "That kind of depends upon what happens tomorrow", Grassley said.
In evidence for the hearing, Kavanaugh acknowledges drinking in high school with his friends, but says he has never done anything "remotely resembling" the sexual misconduct alleged by his chief accuser. "This is how I met Brett Kavanaugh, the boy who sexually assaulted me".
The Senate is narrowly divided and Kavanaugh will need to convince a handful of Republican lawmakers, including Sens.
Feinstein said: "So what you are telling us is this could not be a case of mistaken identity".
His frustration seems to fly in the face of his own words during a hearing in 1991, when Anita Hill famously came forward with allegations of sexual harassment in front of an all-white panel of male senators.
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He said Democrats "go into a back room and they talk with each other and they laugh at what they're getting away with".
Swetnick said she was a victim of one of those incidents in the early 1980s and that Kavanaugh and Judge had been present, though she did not say whether they had sex with her.
Blasey Ford's accusations have thrust her into an intense national spotlight, as Trump seeks to push through his nominee on party lines and Democrats demand a suspension of the proceedings to allow the FBI to conduct a thorough investigation.
Ford went on to say that "Brett's assault on me drastically altered my life" but "I convinced myself that because Brett did not rape me, I should be able to move on and just pretend that it had never happened". "I believed he was going to rape me", Ford said, adding that Kavanaugh and a friend of his were "drunkenly laughing during the attack".
"What they have endured ought to be considered by all of us as unacceptable and a poor reflection on the state of civility in our democracy", Grassley said. "And I believe that's why they should take the time necessary to fully contemplate that". Alas, the New York Times could not independently corroborate even one of her claims, and said Avennati declined to make her available for an interview.
The conversation took place shortly after mid-day.
That means that a handful of moderate Republican senators who have not announced whether or not they support Mr Kavanaugh could determine his fate. Avenatti also represents Stephanie Clifford, the adult film star known as Stormy Daniels who says she had an affair with Trump before he was elected president.
The second accuser, Ramirez, a classmate of Kavanaugh's at Yale University, told the New Yorker magazine that he exposed himself to her at a party when they were both first-year students.