In a statement Wednesday night after McConnell set the vote in motion, Ford's counsel wrote: "An FBI supplemental background investigation that did not include an interview of Dr. Christine Blasey Ford - nor the witnesses who corroborate her testimony - can not be called an investigation". Kavanaugh vehemently denied the allegations.
The report could be delivered to Capitol Hill as early as Wednesday.
The White House - through press secretary Sarah Sanders and others - has dismissed all the allegations against him as old news that had been litigated during the campaign.
In a separate statement on Twitter, John Clune, who represents another accuser, Deborah Ramirez, said Federal Bureau of Investigation agents interviewed her on Sunday and accepted a list of more than 20 witnesses who can support her allegations.
A number of Kavanaugh's classmates have publicly said he misrepresented or lied about his drinking habits when he was in school, while he testified under oath in front of the Senate. A handful of Senate aides may view the findings as well.
Ahead of the release of the FBI's assessment into the allegations made against Judge Brett Kavanaugh, Dr. Christine Blasey Ford's legal team released a statement blasting the investigation. With Republicans clinging to a razor-thin 51-49 majority and five senators - including three Republicans - still vacillating, the conservative jurist's prospects of Senate confirmation remained murky and highly dependent on the file's contents, which are supposed to be kept secret.
And speaking at an event hosted by The Atlantic magazine, Trump ally Senator Lindsey Graham of SC said he "didn't particularly like" the president's remarks, adding, "I would tell him, knock it off".
The court's nine justices are appointed for life and have the final say on some of the most contentious issues in U.S. public life, from abortion, to gun control, to voting laws.
Republicans noted that a bipartisan memorandum of understanding in 2009 dictates the handling of such reports.
Democrats questioned the secrecy - and the decision to rely on the standard procedure - given the significance.
However, as of Wednesday afternoon, senators did not expect to receive a full report of everything the FBI investigated in their week-long investigation - rather, they expected interview summaries without any drawn conclusions or summaries from the FBI, Republican Sen. Among all voters, however, 48 percent said that the Senate should reject him, while 42 percent want him confirmed.
Some Republican senators said at least a portion of the document should be available for public review.
"All of us need to keep in mind there's a few people that are on the fence right now". John Kennedy, R. -La., on the Judiciary Committee.
Neither has said how she will vote.
Democrats have seized most recently on Mr Kavanaugh's indignant, emotional testimony before the judiciary committee to question whether he has the temperament for a lifetime appointment on the nation's highest court.
White House counselor Kellyanne Conway made a similar argument earlier in the day, saying that Ford had "been treated like a Faberge egg by all of us, beginning with me and the president" and that Trump was "pointing out factual inconsistencies".
"We've been very open and transparent throughout the process", she said.
"Arizona's Jeff Flake - who insisted on a weeklong delay in a confirmation vote so the FBI can have another investigation - called Trump's remarks" appalling". "I respect her position very much", Trump said to reporters on Monday.
Sen. Dianne Feinstein, the top Democrat on the Senate Judiciary Committee, blamed the FBI's narrow list of interviewees on the White House.
But last week he took the gloves off, ripping into Democrats for what he called "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." Sen.
"It's just basic memory functions, and also just the level of norepinephrine and epinephrine in the brain that. encodes memories into the hippocampus so that trauma-related experience is locked there [while] other memories just drift", Ford said.
"While we are limited in what we can say about this background investigation in a public setting, we are compelled to state for the record that there is information [in the tweet] that is not accurate", the Democrats wrote in their letter, without providing details. The FBI probably won't try to resolve disputes between conflicting witnesses, and witnesses wouldn't be tested by polygraph, he said.
Sen. Bob Corker speaks to members of the media after a weekly Senate Republican Policy Luncheon at the Capitol on May 8, 2018, in Washington.