Nine witnesses, twelve reports, and 46 pages.

That’s the extent of a supplementary FBI background check on Supreme Court nominee Brett Kavanaugh that Republicans now say clears a path to vote on his confirmation beginning Friday morning.

“Hopefully we are 48 hours away from having a new person on the Supreme Court,” said Senate Judiciary Committee Chairman Chuck Grassley, R-Iowa, after he reviewed the report.

Grassley, along with more than half the GOP side of the panel, gathered to brief reporters and tout their view that the report exonerates Kavanaugh from two allegations of sexual misconduct dating back more than 35 years.

[Click here for complete Kavanaugh coverage]

But while most Republicans leaving the room said the report clears Kavanaugh, at least three GOP lawmakers are undecided and any two of them could ultimately block the nomination unless a Democrat crosses the aisle.

Sens. Susan Collins of Maine, Jeff Flake of Arizona, and Lisa Murkowski of Alaska spent hours poring over the report but have not yet stated categorically that they will vote for Kavanaugh.

Flake and Collins indicated Thursday morning that they didn't find a reason to oppose him — initial reactions that boosted the hopes of Kavanaugh backers — but stopped short of saying they would vote "yes." And Flake, as Republican leaders well know, can sometimes change his mind.

The report includes FBI interviews pertaining to a claim made by Christine Blasey Ford that Kavanaugh attempted to sexually assault her while the two were at a party in high school. They also questioned Deborah Ramirez, who accused Kavanaugh of flashing her at a drunken party in college.

“What we know for sure is that the FBI report did not corroborate the allegations against Kavanaugh,” said Senate Majority Leader Mitch McConnell, R-Ky. “The second thing we know for sure is anything we did would not satisfy the Democrats. They are dug in.”

Democrats, who have led the charge against Kavanaugh since his nomination, point to a letter sent by Ford’s lawyers Thursday listing witnesses who are friends of Ford’s who could substantiate her story that Kavanaugh was her attacker.

“The FBI has gotten all the permission they need to interview whoever they think is necessary,” said Majority Whip John Cornyn, R-Texas. “They have followed additional leads.”

Sen. Mike Lee, R-Utah, said the FBI was instructed to interview witnesses related to the credible accusations against Kavanaugh.

Republicans and Democrats are prohibited from discussing the details of the report, but it appears to exclude a third accuser who has been largely discredited after claiming Kavanaugh participated in drugging and gang rapes.

And it does not delve into stories of Kavanaugh's college drinking, despite former classmates sending letters about it to the FBI and discussing it on cable news.

A single copy of the FBI report is available for lawmakers to review in a vault in the Capitol basement. Lawmakers filed in and out all day Thursday, with Republicans telling reporters the reports contain nothing corroborating the claims against Kavanaugh and Democrats denouncing the report as a sham.

The single copy forced eight to 10 lawmakers to read the report together and then discuss its contents. Senators also have access to a stack of tips about Kavanaugh called into the FBI.

“The process of reviewing the FBI reports we received this morning has been exhaustive,” Lee said. “But because we can review them in only one place, we reviewed them together and we talked about each point made to make sure we understood the interview and the message of each report.”

[Opinion: In the Kavanaugh debate, there's only one truth, not 'her truth' or 'his truth']

Sen. Bob Corker, R-Tenn., said some of the witnesses seemed apologetic they could not corroborate the sexual misconduct allegations.

"You could tell people even felt badly, that, this person is a friend, but they just couldn’t corroborate,” Corker said.

Ford’s friend, Leyland Keyser, has denied several times knowing anything about the incident or ever meeting Kavanaugh.

The FBI did not talk to a friend of Ramirez who said he heard about the incident she described.

But Republicans said they are satisfied with the report, even without additional witness interviews and despite the FBI not interviewing Ford and Kavanaugh, who testified extensively before the committee.

“For anybody who had any doubts at all, the FBI report was very helpful,” Corker said. “I did not learn anything new in reading these 12 documents.”