Jon Tester - both announced they would oppose Kavanaugh.
Ford had repeatedly asked for an FBI investigation during her testimony, which only Democrats on the committee then supported. Kavanaugh entered the hearing room fuming and ready to fight, as he angrily denied the charges from Ford and other women accusing him of misconduct, barked back at senators and dismissed some questions with a flippant "whatever".
Mr Kavanaugh, 53, struggled to hold back tears, particularly when he referred to his own family, and said that his family and his name had been "totally and permanently destroyed".
Two other key Republicans, Collins and Murkowski, said they backed the plan after they and other GOP senators met for an hour in Senate Majority Leader Mitch McConnell's office in the Capitol.
Fellow Republican Senator Lindsey Graham, of SC, said Democrats' treatment of Mr Kavanaugh was the "most despicable thing" he had seen in politics. He mocked Ford's allegations - and several others since - that have accused him of sexual impropriety.
Sen. Patrick Leahy, D-Vt., asked Kavanaugh during the hearing if he was one of the characters, Bart O'Kavanaugh, in Judge's book called "Wasted: Tales of a Gen X Drunk", which was written in 1997.
The Washington Post via Getty Images Christine Blasey Ford and Brett Kavanaugh's testimony was not enough, legal expert Alan Dershowitz said. But he said he would not be "intimidated" into withdrawing his candidacy for a spot on the nine-member Supreme Court.
Democrats have rallied strongly behind Ms Ford.
As of Thursday's testimonies, Dr. Ford's claim had not been investigated by the Federal Bureau of Investigation - something the Democratic members of the Committee and Dr. Ford herself all requested.
Ms Ford, a California psychology professor, spoke carefully and deliberately during the hearing, using scientific terminology at one point to describe how a brain might remember details of events decades later.
"Indelible in the hippocampus is the laughter", said Ford, who is a research psychologist, "the uproarious laughter between the two".
Lindsey Graham Warns Democrats: 'You Better Watch Out for Your Nominees'
When asked whether there was any chance she was mistaken about the identity of her attacker, Blasey Ford said, "Absolutely not". There are now 10 Democrats up for re-election in red states that voted for Trump in the 2016 presidential election.
EPL: Manchester United players believe Mourinho will be sacked this week
Marcus Rashford halved the deficit after replacing Lindelof but Marko Arnautovic killed off Mourinho's side in the 74th minute. Meanwhile, although United still believe in Jose, if results do not come, then they may be tempted to look elsewhere.
EAM Sushma Swaraj calls for urgent fundamental reforms in UN Security Council
India lambasted Pakistan's assertion that New Delhi had called off the proposed foreign minister-level talks on flimsy grounds. Swaraj said, "On the one hand, we want to fight terrorism; on the other, we can not define it".
White House spokesman Raj Shah said before the Judiciary Committee vote that the administration believes "things are moving in the right direction" for Kavanaugh's confirmation and that the White House is continuing to engage with undecided senators. She said he and Judge had also turned the music up to a loud volume.
He lashed out over the time it took the committee to convene the hearing after Ford's allegations emerged, singling out the Democrats for "unleashing" forces against him. Kistenmacher has long supported Collins, even though he says he's more conservative than she is.
Judge Brett Kavanaugh denied all accusations he sexually assaulted a woman in high school, saying he bears no ill will to his accuser.
Later, she told Senator Dick Durbin that her certainty was "100%".
Republican Senators on the committee responded with rage as Democrats questioned Kavanaugh during what Sen.
"I do not know how I will assess the credibility of these witnesses - these human beings - on the grave matters that will be testified to, because I have not yet heard a word of their testimony", he said. As to whether it could give them a path to defeating Kavanaugh's nomination, "this is the best we can do right now", she said.
Before Ms Ford began, committee chairman Chuck Grassley defended the Republicans' handling of the confirmation proceedings so far.
Ms Feinstein criticised Republicans who have rejected Democratic demands to slow Mr Kavanaugh's confirmation process and let the FBI investigate all the allegations, saying: "What I don't understand is the rush to judgment".
Republicans acknowledged that much was riding on Mr Kavanaugh's performance.
Kavanaugh vowed to continue his bid to join the high court, to which President Donald Trump nominated him in July.
REPUBLICAN SEN. TED CRUZ of Texas: "All three of those fact witnesses have stated on the record under penalty of perjury that they do not recall what she is alleging happening".