Senate Majority Leader Mitch McConnell has already started a process that will produce a crucial test vote in his polarised chamber on Friday on Mr Kavanaugh's fate.
Trump, himself accused by numerous women during the 2016 presidential race of sexual misconduct, wrote on Twitter that the Federal Bureau of Investigation report showed that the allegations against Kavanaugh were "totally uncorroborated".
Further complicating matters for the Republican leadership, Senator Steve Daines was set to be at his daughter's wedding on Saturday and has said he will not miss the ceremony.
Senate Democratic leader Chuck Schumer said he disagreed with the statement by Mr Grassley that the report found "no hint of misconduct" by Mr Kavanaugh.
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.
"I am pleased to support Judge Kavanaugh's confirmation".
"Anybody who pushes back on the fact that Doctor Ford wasn't given ample opportunity to make her case and state her case has been living in a cave", she said.
Aside from Ford, several other women, including two who had also come forward, have accused Kavanaugh of sexually assaulting or harassing them during his high school and university years. About 20 minutes after the vote, his office released his schedule, which included an 11:25 a.m. departure for the Big Apple.
That could be bad news as Republicans need every vote they can get.
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But whatever you think of whether Kavanaugh's testimony was justified, he has certainly facilitated that ongoing process. It was not clear why the 10th was not interviewed. "I'm disgusted with the process this week", Perdue said.
Professor Christine Blasey Ford and U.S. Supreme Court nominee Brett Kavanaugh (R), testify in this combination photo during a Senate Judiciary Committee confirmation hearing on Capitol Hill in Washington, DC, U.S., September 27, 2018. As the lone Republican to vote against cloture, it would be very odd for her to then vote for his confirmation.
The Senate is expected to cast a final vote for Kavanaugh as early as Saturday.
Republicans can rely on Vice President Mike Pence to break a tie, but that has never happened for a Supreme Court nominee, according to the Senate Historical Office.
Looks like Susan Collins has saved Brett Kavanaugh's confirmation.
His column appeared aimed at winning over the three GOP senators who remain undecided.
But that's misleading. The graph above considers only those who express support on a question that demands people have knowledge of Kavanaugh and how he would be likely to conduct himself on the bench.
"This process has been ruled by fear and anger and underhanded gamesmanship for too long", McConnell said.
"It smacks of a whitewash", Democratic Senator Richard Blumenthal told reporters, saying the report should not give political cover for Republicans to vote for Kavanaugh because "it is blatantly incomplete".
Ms Feinstein said the White House may have limited the probe.
Mr Schumer called for the report to be made public as well as the directive the White House gave the FBI ordering the investigation.
Before Kavanaugh's committee confirmation hearing last month, a group from the liberal advocacy group Demand Justice donned the red robes and white bonnets of the namesake handmaids in "The Handmaid's Tale", the Margaret Atwood book and Hulu TV series while protesting in the Hart Senate Building atrium.