Reporting by CBS News' Kathryn Watson, Bo Erickson, Nancy Cordes, Fin Gomez and Grace Segers
Judge Brett Kavanaugh could be Justice Brett Kavanaugh by the end of the weekend.
Republican Sen. Susan Collins of Maine and West Virginia Democrat Sen. Joe Manchin were the final undecided senators to announce their votes Friday afternoon -- and they're voting "yes." So is Sen. Jeff Flake, the Arizona Republican who called for the FBI background probe into Kavanaugh. Sen Lisa Murkowski, an Alaska Republican, will vote no, but she is the only Republican who will.
The final vote on Kavanaugh is expected Saturday.
Who are the undecided senators?
Sen. Susan Collins, the Republican moderate from Maine who said she was carefully reviewing all the information Thursday, hasn't announced her decision.
Sen. Joe Manchin, a vulnerable Democrat in West Virginia, the state that voted most decisively for Mr. Trump in 2016, also has yet to say where he will land.
What time does the Senate vote today?
The first floor vote in the Senate is set to take place at 10:30 a.m. It's called a "cloture" vote, which requires a simple majority of senators and simply sets the voting process in motion.
A final vote on Kavanaugh could take place as early as Saturday. But that could be delayed if Republicans don't have an easy majority, since Sen. Steve Daines, a Montana Republican, insists he will attend his daughter's wedding back home.
Senate Majority Leader Mitch McConnell has the final say on scheduling the vote, pursuant to Senate rules.
Pence on standby in case his vote is needed
Vie President Mike Pence is in Washington this weekend, in case his vote is needed to break a tie, sources tell CBS News.
Pence, while he has expressed his support for Kavanaugh, has been less vocal in his defense of the nominee than has Mr. Trump. At a rally in Minnesota Thursday night, the president blasted Democrats for obstructing his nominee, although it was Republicans who requested the delay in the vote to allow for the FBI probe. The president also reiterated his defense of Kavanaugh on Twitter.
"The harsh and unfair treatment of Judge Brett Kavanaugh is having an incredible upward impact on voters. The PEOPLE get it far better than the politicians. Most importantly, this great life cannot be ruined by mean & despicable Democrats and totally uncorroborated allegations!" the president tweeted Thursday.
Trump calls elevator protesters "paid professionals"
One hour before the cloture vote, the president blasted protesters -- specifically, the "elevator screamers."
Scores of people have protested Kavanaugh's confirmation to the court, and some were detained on Thursday.
But the president could be referencing women who held the elevator open to tell Sen. Jeff Flake, R-Arizona, how they said they had been victims of sexual assault.
"The very rude elevator screamers are paid professionals only looking to make Senators look bad. Don't fall for it! Also, look at all of the professionally made identical signs. Paid for by Soros and others. These are not signs made in the basement from love!" Mr. Trump said.
Joe Manchin returns to review FBI report before vote
West Virginia Sen. Joe Manchin entered the room in the Senate where the FBI report is being housed to look at it one more time. As he arrived, reporters asked him about his vote.
"Probably undecided as I walk through the door," Manchin said. A spokesperson for Manchin suggested that the door he was referring to was the door to the Senate floor, where the full Senate will take a procedural vote on the nomination later this morning.
Sen. Dick Durbin, D-Illinois, told "CBS This Morning," "I've sat through a dozen or more meetings with Joe on the subject. He's kept his own counsel. He's obviously weighing this thing from a personal point of view. He understands the historic impact. I cannot tell you as I stand here how Joe's going to vote."
Different senators have different views on whether the first procedural vote and the vote to confirm should be the same. Sometimes senators vote to move a nomination forward even if they are planning to vote against it in the end. For Manchin, Friday's procedural vote and the confirmation vote are likely to be the same, his aides tell CBS News.
Sasse says he'll vote for Kavanaugh
Sen. Ben Sasse, who chided President Trump for appearing to mock Kavanaugh accuser Christine Blasey Ford this week, announced in a statement that he will indeed vote to confirm Kavanaugh.
"I'm voting for confirmation because of the evidence and Judge Kavanaugh's qualifications," the Republican said in a statement. "After spending more than 150 hours doing my homework, I completed my reading of the FBI's seventh background investigation this morning. This broken and politicized process has further undermined public trust. Washington embarrassed itself for the last month, but it is clear that most Americans are yearning for more than tribal blood feuds."
What is a cloture vote?
Senate Majority Leader Mitch McConnell filed a motion Wednesday for a cloture vote on Kavanaugh's nomination, essentially setting in motion the procedure and process that would jump start the voting process to confirm the next Supreme Court justice.
By invoking cloture, McConnell is ending debate over changing the Senate Rules in order to hold a vote sometime Friday and a vote by the full Senate on Saturday.Senate rules require one intervening day between filing cloture and taking a procedural vote on cloture. Thursday would be that intervening day.
Final confirmation vote on Kavanaugh would occur 30 hours after the cloture vote.There are up to 30 hours of debate if senators want to use it. It is not assigned to a either party. If Republicans choose not to speak on the floor, Democrats can use all 30 hours if they choose. Both sides would have to agree to yield back a certain amount of time to shorten the debate from 30 hours.
Collins to announce how she'll vote in 3 p.m. speech
Sen. Susan Collins, one of the few remaining undecided votes on Kavanaugh, will announce how she will vote in the final vote in a 3 p.m. floor speech, a source close to the senator tells CBS News' John Nolen.
Collins' vote is being closely watched.
Schumer: "The well was poisoned from the outset"
Senate Minority Leader Chuck Schumer, speaking from the Senate floor, said Kavanaugh's nomination was against the national interests from its outset, backed by conservative special interest groups.
"The well was poisoned from the outset," Schumer said.
Schumer went on to describe his frustrations with the process. Schumer said that when Republicans claim Democrats are behind delays, they fail to mention they held up the confirmation of Obama-era nominee Merrick Garland.
"I don't blame them. They have a flawed nominee," Schumer said of the Republicans.
Murkowski a "no" on advancing Kavanaugh in procedural vote
Sen. Lisa Murkowski, R-Alaska, sent shockwaves when she voted "no" on whether to advance Kavanaugh to a final vote.
But Sens. Jeff Flake, R-Arizona, Joe Manchin, D-West Virginia, and Susan Collins, R-Maine, all voted "yes" on advancing Kavanaugh to a final vote.
Those votes are not definite indicators of which way the senators will go in the final vote. Collins is set to announce her final vote at 3 p.m.
When the vote ended, GOP senators Rob Portman of Ohio and John Cornyn of Texas walked directly over to Murkowski, CBS News' Nancy Cordes reports, and shook her hand. Portman especially is a friend of Kavanaugh's, and has been lobbying the undecided votes on his behalf. Sen. Maria Cantwell, a Democrat from Washington, slipped Murkowski a note and walked away. Collins put her arm around Murkowski's shoulder. And Democratic Sens. Tammy Baldwin of Wisconsin and Amy Klobuchar of Minnesota walked up to Murkowski with smiles on their faces.
Murkowski told reporters after the vote that it was a "very, very difficult" decision. While she said that she believes Kavanaugh is a "good man," he is not the "right man for the court at this time."
"This has truly been the most difficult decision that I've ever had to make," she said.
Procedural vote is 51-49, advancing Kavanaugh's nomination
All in all, senators vote 51-49 to advance Kavanaugh's nomination to a final vote. The exact timing for that final vote has yet to be announced.
Trump tweets approval of first vote, White House spox says they're "confident"
Mr. Trump took to Twitter as soon as the procedural vote was called in Kavanaugh's favor, tweeting, "Very proud of the U.S. Senate for voting "YES" to advance the nomination of Judge Brett Kavanaugh!"
White House spokesman Raj Shah told CBS News' Paula Reid, "We're confident" about getting the votes to confirm the judge to the highest court.
Flake says that he is a "yes" on Kavanaugh
Republican Sen. Jeff Flake told reporters that unless "something big" changes, he will vote to confirm Kavanaugh.
Flake was one of the few holdouts on Kavanaugh's confirmation, even though he announced last week that he would vote to confirm him. The senator spearheaded the movement to call for an FBI investigation into allegation of sexual misconduct last week. He now appears to be satisfied with the results of that investigation.
Senior administration official says White House is "confident" Kavanaugh will be confirmed
A senior administration official directly familiar with the White House's Kavanaugh nomination efforts told CBS News that the White House believes Republicans will have the votes to confirm the judge Saturday.
When asked whether they believed Sens. Susan Collins and Joe Manchin's "yes" votes to advance Kavanaugh's confirmation would reflect their ultimate votes, the official said "We hope so."
The official said that the White House was "confident," but that Vice President Mike Pence will remain in Washington this week in case he needs to cast a tie-breaking vote.
Unclear if Trump has spoken to Collins, Manchin
With hours to go before an expected final vote on Kavanaugh, it's unclear whether the president has spoken with Sen. Susan Collins, R-Maine, or Sen. Joe Manchin, D-West Virginia. As of early Friday afternoon, they are the two undecided votes.
White House press secretary Sarah Sanders did not confirm which senators the president has spoken with when asked repeatedly by reporters outside the White House Friday afternoon.
But Sanders was optimistic. Asked whether the White House has the votes, she said, "We sure hope so."
McConnell has lunch with Collins
Senate Majority Leader Mitch McConnell said he had lunch with undecided Sen. Susan Collins Friday afternoon.
They dined in the members dining room, McConnell told reporters, adding, "we had a good day. We look forward to the vote tomorrow."
Anticipation builds for Collins' speech
Journalists and others filled the hallway outside Collins' office on Friday afternoon ahead of her 3 p.m. speech announcing how she will vote. Much weight rests with Collins ahead of her announcement.
Collins has carefully avoided saying where she will land up to this point, taking time to review the FBI report and come to her own conclusion.
Collins says she will vote to confirm Kavanaugh
Maine Sen. Susan Collins said she would vote to confirm Kavanaugh on the Senate floor. Collins is considered a key swing vote.
Collins said that she had extensively reviewed the record from his 12 years as a D.C. District Court judge. She also said she had met with thousands of her constituents, including proponents and opponents of Kavanaugh. She then offered counterarguments to criticism of Kavanaugh: she doesn't believe he overturn the Affordable Care Act, or that he would have an expansive view of presidential power in his rulings.
"Judge Kavanaugh has been unequivocal in his belief that no president is above the law," she said.
Collins did not mention the allegations of sexual misconduct against Kavanaugh until around 30 minutes into her speech.
"Certain fundamental legal principles about due process, presumption of innocence and fairness do bear on my thinking and I cannot abandon them," she said. Of the allegations, she said, "I do not believe that these charges can fairly prevent Judge Kavanaugh from serving on the court."
She suggested that Ford may have been manipulated by Democrats, especially the person who may have leaked her initial letter detailing her allegations against Kavanaugh.
In her speech, Collins called the confirmation process "dysfunctional." She talked about how certain Democratic groups and senators had immediately opposed Kavanaugh.
Republican Sens. Shelley Moore Capito and Cindy Hyde-Smith sat behind her.
"Our Supreme Court confirmation process has been in steady decline for more than 30 years. One can only hope that the Kavanaugh nomination is where the process has finally hit rock bottom," she said.
As soon as Collins began speaking, protesters began chanting: "Vote no, show up for Maine women."
Manchin says he will vote for Kavanaugh
West Virginia Sen. Joe Manchin, a Democrat who was the final deciding vote on Kavanaugh's confirmation, said in a statement that he posted to Twitter that he would vote to confirm Kavanaugh.
"I do hope that Judge Kavanaugh will not allow the partisan nature this process took to follow him onto the court," Manchin said.
As he spoke to a gaggle of reporters after posting his tweet, protesters chanted "shame" repeatedly.
Over 100 protesters arrested Friday
Capitol Police announced Friday evening that 101 protesters had been arrested, primarily for unlawful demonstrations.
Six of those people were arrested in the Senate Gallery shortly after Collins began speaking on the floor. They had begun shouting during her speech.
Lisa Murkowski speaks on Senate floor
Sen. Lisa Murkowski, the sole Republican who said she will vote against Kavanaugh, said on the Senate floor Friday evening that she had been "leaning toward" confirming Kavanaugh. But she said "I take this obligation that we have in the role of advice and consent as seriously as anything I am obligated -- and privileged -- to be able to vote on."
She read from the juridical conduct code about how a judge should avoid impropriety or the appearance of impropriety. "It is really high that a judge shall act all times -- not just sometimes when you are wearing your robe -- that a judge should act all times in a matter that promotes public confidence," she said.
Murkowski said she did not think Kavanaugh would vote to end Roe v. Wade. She also said she did not think he would be a vote to end healthcare or endanger Alaskan natives.
Murkowski: "I will be a no today and a no tomorrow"
Murkowski repeated that she will be a "no today and a no tomorrow," but said her vote will be recorded as "present" as a courtesy to cancel out the absence of GOP Sen. Steve Daines. Daines is flying to Montana to attend his daughter's wedding.
"This will not change the outcome," Murkowski said.
Booker: FBI investigation was a "sham"
Sen. Cory Booker said in a 30-minute speech on Senate floor Friday night that he felt the whole process was a "sham," saying the FBI investigation wasn't thorough.
"The least this body could do was pause for a moment and not do a sham but do a full FBI investigation because these charges are serious," Booker said.
Booker also brought up President Trump's mocking of Christine Blasey Ford, saying "the most powerful man in the country mocked her and got uproarious laughter. The same thing that was seared in her memory. Made her again the focus of laughter and mocking."
Booker is a member of the Senate Judiciary Committee, which questioned Ford and Kavanaugh. Booker called Kavanaugh "deeply disrespectful" of him and his Senate colleagues.
"He went on to say what goes around comes around," Booker said. Is this someone that can sit on the highest court of the land? Is this someone who shows the temperament for the highest court? He said all of this in response to questions. This wasn't off the cuff. In his prepared testimony, in another instance, he said this is a circus. The consequences will be with us for decades."