Thousands of anti-Kavanaugh protesters rallied outside the Supreme Court and entered a Senate office building, holding signs such as "Believe Survivors" and "Kava-Nope". Capitol Police eventually arrested more than 300 people, including comedian and actress Amy Schumer.
A round of Senate voting is expected Friday, with the final vote likely Saturday.
Three of the four "undecided" senators would have to vote against Kavanaugh to defeat the nomination. Depending on how Republicans perform on November 6, the eyes of the nation could fall on a November 27 MS runoff in what could become an expensive and high-profile race to determine control of the Senate.
With Republicans clinging to a razor-thin 51-49 Senate majority and five senators - including three Republicans - still publicly undeclared, the conservative jurist's prospects of Senate confirmation could hinge largely on the file's contents.
But Flake also said that the President's attack would not influence his vote.
A second undeclared Republican, Susan Collins of ME, also expressed satisfaction with the probe, calling it "a very thorough investigation". "You're not helping", Trump ally Sen. "I don't remember", Trump told the crowd in a play on Ford's testimony before the Senate Judiciary Committee last week, which has prompted an FBI investigation. One is Mark Judge, who the professor says was in the room when Kavanaugh lay on top of her, ground his genitals against her and covered her mouth to keep her from screaming. She told reporters she would not announce her position until Friday.
While the comments by Flake and Collins were positive, neither explicitly announced support for Kavanaugh.
Artist John Mavroudis used Christine Blasey Ford's testimony to create a typographical illustration.
West Virginia's Joe Manchin, the other undeclared Democrat, spent time looking at the report and said he would resume reading it Friday.
Democratic Sen. Richard Blumenthal of CT, who also sits on the Judiciary Committee, told CNN's Anderson Cooper on Thursday that he wasn't buying Kavanaugh's attempt at casting his testimony in a different light.
Most Democrats opposed Trump's nomination of Kavanaugh from the outset. The sharply partisan battle became an intense political drama when Ford and two other women emerged to accuse Kavanaugh of sexual misconduct in the 1980s when he was in high school and college.
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Patrick "P.J." Smyth, who Ford said had also attended the party, told investigators he had "no knowledge" of the gathering Ford described or any allegation of misconduct by Kavanaugh, according to his attorney, Eric Bruce.
Kavanaugh has denied the allegation.
Kavanaugh wrote on his calendar for that date "Go to Timmy's for skis w/Judge, Tom, PJ, Bernie, Squi".
In an op-ed Thursday in The Wall Street Journal, Kavanaugh said there were "a few things I should not have said" during the hearing.
McConnell says Democrats have been trying to "move the goal posts" for Kavanaugh's confirmation and that senators will have the opportunity to vote for Kavanaugh and against "the politics of personal destruction". Video of his remarks was shown by the C-SPAN television network. Said Sen. Lindsey Graham, R-S.C., "The senators who requested the supplemental background check got what they requested, and I am ready to vote".
The Kavanaugh fight has riveted Americans weeks before November 6 elections in which Democrats are trying to take control of Congress from the Republicans.
The new allegation against Ford also come as Trump mocked Ford during a campaign rally Tuesday night in his most direct attack against her.
The third woman who has made public charges against Kavanaugh, Julie Swetnick, has not been interviewed by the Federal Bureau of Investigation and has not testified under oath in any public forum. Senators were allowed to read it behind closed doors in a secure location in the Capitol, without taking notes or making copies. Heitkamp is in a tough re-election battle in a state Trump by nearly 36 percentage points.
Groups linked to the Democratic Party staged protests in Washington Thursday, rallying outside Senate offices and then at the Supreme Court.
"I'm sick and exhausted of seeing women's experiences not be given weight", demonstrator Christine Zagrobelny, 29, a software engineer from New York City, said outside the Supreme Court.
The dramatic Senate floor announcement by perhaps the chamber's most moderate Republican ended most of the suspense over a tortuous, election-season battle that had left Kavanaugh's fate in doubt for almost a month after the first accusation against him.