WASHINGTON (Reuters) - Fighting to salvage his U.S. Supreme Court nomination, Brett Kavanaugh angrily denied on Thursday a university professor’s accusation that he sexually assaulted her 36 years ago in a day of dramatic testimony that gripped the country.

Christine Blasey Ford, her voice sometimes cracking with emotion, appeared in public for the first time to detail her allegation against Kavanaugh, a conservative federal appeals court judge chosen by President Donald Trump for a lifetime job on the top U.S. court.

Ford told the Senate Judiciary Committee she feared Kavanaugh would rape and accidentally kill her during the alleged assault in 1982, when both were high school students in Maryland.

She said she was “100 percent certain” it was Kavanaugh who assaulted her.

Kavanaugh testified after Ford finished her appearance, claiming he was the victim of “grotesque and obvious character assassination” orchestrated by Senate Democrats. He said he “unequivocally and categorically” denied Ford’s allegation and vowed he would not back down.

“I will not be intimidated into withdrawing from this process,” Kavanaugh added.

Although they were at no point in the hearing room together, the clash pitted his word against hers.

The almost nine hours of intensely emotional testimony came against the backdrop of the #MeToo movement against sexual harassment and assault and had millions of Americans riveted to their TV screens and smart phones.

Ford has emerged in the eyes of many American women as a compelling figure in the #MeToo movement that is usually associated less with the names of victims and more with a list of high-profile men accused of misconduct.

It was not clear, however, if the drama changed the views of any senators.

The Senate, controlled 51-49 by Trump’s fellow Republicans, must now decide whether to vote to confirm Kavanaugh after the extraordinary nearly nine-hour hearing.

Four senators -- Republicans Susan Collins, Lisa Murkowski and Jeff Flake along with Democrat Joe Manchin -- are seen as possible swing voters whose decisions will determine whether Kavanaugh is approved or rejected.

Kavanaugh was nominated by President Donald Trump and his confirmation would cement conservative control of the Supreme Court with disputes over abortion rights, immigration, gay rights, voting rights and transgender troops possibly heading toward the justices soon.

The Judiciary Committee, on which Republicans hold an 11-10 majority, was to meet on Friday morning and several senators said they expected it to vote then. The full Senate could vote within days.

Writing on Twitter after the hearing, Trump said of Kavanaugh: “His testimony was powerful, honest, and riveting. Democrats’ search and destroy strategy is disgraceful and this process has been a total sham and effort to delay, obstruct, and resist. The Senate must vote!”

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TEARS

Kavanaugh at times choked back tears, especially when he mentioned that his daughter suggested they pray for Ford, when he spoke of his father and when he mentioned women friends who had rallied to support him.

Kavanaugh sharply attacked Democratic senators, calling himself the victim of “a calculated and orchestrated political hit” fueled by anger on the left at Trump’s 2016 election win over Democrat Hillary Clinton, his conservative judicial record, and revenge on behalf of Clinton and her husband, former President Bill Clinton.

“I swear today, under oath, before the Senate and the nation, before my family and God, I am innocent of this charge,” Kavanaugh told the Judiciary Committee.

Ford, a psychology professor at Palo Alto University in California, said over four hours of testimony that a drunken Kavanaugh attacked her and tried to remove her clothing at a gathering of teenagers when he was 17 years old and she was 15.

“With what degree of certainty do you believe Brett Kavanaugh assaulted you?” Democratic Senator Dick Durbin asked Ford.

“One hundred percent,” she replied, remaining firm and unruffled even under questioning by a sex crimes prosecutor hired by the committee’s Republicans.

When Democratic Senator Dianne Feinstein asked her if it could be a case of mistaken identity, as Kavanaugh and some Republican senators have suggested, Ford replied: “Absolutely not” .

Murkowski, one of the three moderate Republican senators who have not announced whether or not they will support Kavanaugh, told Reuters: “I find Dr. Ford’s testimony to be credible.”

For his part, Kavanaugh testified he was “100 percent certain” none of the alleged incidents of sexual misconduct occurred.

‘HEROIC’

Democrats lauded Ford’s testimony as credible, brave and, in the words of Senator Cory Booker, “nothing short of heroic.”

“I want to thank you for your courage. And I want to tell you I believe you. ... And I believe many Americans across the country believe you,” Democratic Senator Kamala Harris said.

While some Republicans and Trump have called the allegations by Ford and the two other women part of a smear campaign, Ford told the committee she had no political motivation, adding: “I am an independent person and I am no one’s pawn.”

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Ford was seated at a table in the packed hearing room flanked by her lawyers, facing a bank of senators. She told the senators she was “terrified” to testify but felt it was her civic duty to come forward.

“Brett groped me and tried to take off my clothes. He had a hard time because he was very inebriated and because I was wearing a one-piece bathing suit under my clothing. I believed he was going to rape me. I tried to yell for help,” Ford said, adding that Kavanaugh and a friend of his, Mark Judge, were “drunkenly laughing during the attack.”

Democratic senators sought to score political points during their five minutes apiece of questioning Ford. The panel’s Republican senators, all men, did not question her, assigning that task to Rachel Mitchell, a sex crimes prosecutor.

While Mitchell probed Ford’s account looking for gaps, her questioning seemed disjointed. She took turns with the Democratic senators to ask questions in five-minute segments, disrupting her flow.

During Kavanaugh’s testimony, Republican senators sidelined Mitchell and asked their own questions.

The bitter fight over Kavanaugh’s nomination is unfolding just weeks before the Nov. 6 congressional elections in which Democrats are trying to seize majority control of Congress from the Republicans. It has also deepened the country’s political polarization.

‘VICIOUS AND FALSE’

Kavanaugh, sitting alone at the witness table, said he wanted to testify as soon as Ford’s allegation emerged last week and was not surprised other allegations followed.

“In those 10 long days, as was predictable and as I predicted, my family and my name have been totally and permanently destroyed by vicious and false additional accusations,” he said, as his wife sat behind him.

Kavanaugh repeatedly tangled with Democratic senators, interrupting several of them, including Feinstein and Amy Klobuchar, during testy exchanges.

When Klobuchar asked him about his teenage drinking, he threw the question back at her, asking her whether she had ever been blackout drunk. He later apologized for the question.

Kavanaugh was careful not to denounce Ford, noting he wished her “no ill will.” He said he was not questioning that Ford may have been sexually assaulted by someone in some place at some time, but that he had never assaulted her or anyone else.

Some Democrats have called on Kavanaugh to withdraw in light of the allegations. At the hearing, Republican Senator Lindsey Graham castigated Democratic senators, seeking to rally Republicans not to abandon the nominee.

“This is the most unethical sham since I’ve been in politics,” Graham said.

‘UPROARIOUS LAUGHTER’

Ford said Kavanaugh put his hand over her mouth to stop her from screaming during the assault. She added: “This was what terrified me the most, and has had the most lasting impact on my life. It was hard for me to breathe, and I thought that Brett was accidentally going to kill me.”

Her strongest memory of the incident, Ford said, was the “uproarious laughter between the two (Kavanaugh and Judge) and their having fun at my expense.” She said the laughter had haunted her ever since.

Two other women, Deborah Ramirez and Julie Swetnick, have accused Kavanaugh of sexual misconduct in the 1980s.

Ramirez accused Kavanaugh of exposing himself during a drunken dormitory party during the 1983-84 academic year when both attended Yale University.

Swetnick said she witnessed efforts by Kavanaugh and others to get girls drunk at parties so they could be raped. She said Kavanaugh was present at a 1982 party where she was raped.

Trump, who has himself faced accusations of sexual misconduct, chose Kavanaugh to succeed Justice Anthony Kennedy, who retired effective in July.