"After doing my due diligence and now that the record is apparently closed, I will vote against his confirmation", Senator Heidi Heitkamp said on Thursday. Without evidence, he alleged the protesters, several of whom said they have been sexual assault victims were "paid by [financier George] Soros and others".
Trump also has said the Federal Bureau of Investigation report showed that the allegations against Kavanaugh were "totally uncorroborated". Mr Kavanaugh and Prof Ford were not interviewed. Senate Democrats say the investigation is incomplete.
After a bitter partisan fight that gripped the country, lawmakers backed Kavanaugh by 51 to 49 in a procedural vote that moved the Republican-controlled Senate toward a definitive decision on whether to confirm him. "There's nothing in it that we didn't already know".
"I said a few things I should not have said", he wrote in an op-ed published Thursday evening. "I might have been too emotional at times", he said. He has denied the allegations. Given the opportunity to speak to these allegations before the Senate Judiciary Committee, Kavanaugh displayed no sensitivity to the rights of women who come forward with allegations of sexual violence.
Because of the terms of a previous agreement between the Obama White House and the Senate Judiciary Committee, only senators and a limited number of staffers were allowed to see the FBI's report.
It will reopen Friday morning for senators to continue their reading.
The chairman of the Senate Judiciary Committee said Republican leaders were still not completely sure they had the votes needed to confirm Kavanaugh, Trump's second nominee to the court since he took office in January previous year.
"This is one vote that we probably won't know until the votes are actually cast", Chuck Grassley, the chairman of the Senate judiciary committee, told reporters on Capitol Hill.
Senate Majority Leader Mitch McConnell, R-Ky., said that the vote was "a pivotal day for us here in the Senate".
Democrats saw something very different in the report.
Prof Blasey Ford testified last week at a dramatic Judiciary Committee hearing that when she was 15, a drunken 17-year-old Kavanaugh pinned her down, tried to remove her clothing and covered her mouth after she screamed.
Ms Murkowski won her seat as a write-in candidate after having lost the Republican primary in 2010 and has been a reliably centrist vote ever since.
McConnell made the short comment Friday to reporters as he walked to the Senate floor as the chamber opened. Susan Collins, will declare whether or not she plans to support Kavanaugh at 3pm EST.
"He gratuitously indulged in hyperpartisan rhetoric against "the left, ' describing his stormy confirmation as 'a calculated and orchestrated political hit, fuelled with apparent pent-up anger about President Trump and the 2016 election" and 'revenge on behalf of the Clintons, '" The Post's editorial board wrote.
He also said the allegations against him were part of what he called a leftwing conspiracy to keep him off the court. "Who among us would not have been outraged by having a lifetime record drug through the mud with accusations that can not be proven".
Her opposition leaves Sen. Joe Manchin (D-WV) appears to be leaning toward approving him. Sen. He is also in a tough re-election campaign and was silent on Kavanaugh in the days leading up to the vote.