At the same time, Republican leaders seemed to show increasing confidence.
If confirmed, Kavanaugh - an appellate judge and judicial conservative - would replace retired Supreme Court Justice Anthony Kennedy. "You're not helping", Graham said during an on-stage interview at The Atlantic Ideas Festival, which was broadcast on C-SPAN.
Flake, an Arizona Republican, has played a key role in Kavanaugh's confirmation process. Susan Collins of ME told reporters: "It appears to be a very thorough investigation". Joe Manchin of West Virginia, another red state Democrat, has not yet said how he will vote. Mazie Hirono, D-Hawaii, deflected, saying, "This is not a comprehensive FBI investigation on which we can draw conclusions".
Here is what we know about where the four undecideds stand.
He also said: "I disagree with Senator Grassley's statement that there was no hint of misconduct".
Kieley said organizations that provide support for those who have experienced sexual violence across Canada have seen a similar increase in their services, as those who identify with Ford reach out.
Top Democrats fired back at Grassley after getting their own briefing.
Ms Feinstein said the White House may have limited the probe.
A week from today, the reporters and Democrats who told us the FBI completed the Anita Hill investigation in less than a week will tell us the FBI needs more time now. Republicans have a narrow 51-49 Senate majority, and Vice President Mike Pence will be available to cast a tie-breaking vote.
"The Judiciary staff went through all of the witnesses' testimony and talked about it", he said. One senator said it was about 50 pages long.
Sen. Susan Collins, R-MaineSen.
Blasey Ford testified in front of a Senate Judiciary Committee last week and detailed her allegations, which Kavanaugh vehemently denied in his testimony to the committee.
Prof Ford's lawyer said eight people were not interviewed who could corroborate her claims, while Ms Ramirez's lawyer said more than 20 witnesses were not contacted. He provided no specifics.
Senator Dianne Feinstein, the top Democrat on the Senate Judiciary Committee, said the most notable part of the report "is what's not in it". Asked about Trump's mockery in Mississippi, McSally said, "I'd prefer that we all have some grace here".More news: Trump told Saudi King he wouldn’t last ‘2 weeks’ without United States support
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Washington has been awaiting completion of the investigation since last week, when Flake, Collins and Murkowski pressured a reluctant Trump and GOP leaders to order the FBI to renew its background check of the 53-year-old Kavanaugh.
"We have differing views about the other qualifications of Judge Kavanaugh", they wrote.
Ford has said the incident happened in an upstairs room and that she is "100 percent" certain it was Kavanaugh who assaulted her, although she has acknowledged that her memories of other details of the evening remain unclear.
One person who evidently did not was Christine Blasey Ford, the first woman who accused Kavanaugh of sexual misconduct.
Mr Trump weighed in hours later in a tweet in which he denounced what he called "the harsh and unfair treatment" of Mr Kavanaugh.
The President took to Twitter Thursday to blast the "totally uncorroborated allegations!"
As of late Thursday, some key senators were mum about whether or not they would vote in favor of Kavanaugh. Now that brevity has become a widely used talking point against the findings of the short probe they previously called for.
A massive coalition of U.S. Christian churches attended by 40 million people wants Brett Kavanaugh to withdraw his Supreme Court nomination.
Republican Senator from Alaska Lisa Murkowski is surrounded by the media before viewing documents in the Senate Sensitive Compartmented Information Facility (SCIF) in the U.S. Capitol in Washington, D.C., October 04, 2018.
Besides Trump, Senate Republicans also began to aim credibility questions at Ford.
"I think that it would have been a good thing to do, as a capstone to the follow-up of the special inquiry, to go ahead and interview her and get her statement on the record to the Federal Bureau of Investigation", said Chris Swecker, a former assistant director of the Federal Bureau of Investigation.
The FBI did interview Deborah Ramirez, the Yale classmate who accuses Kavanaugh of drunkenly exposing himself to her.