A group of former Yale University students who referred to themselves as "drinking buddies" with Supreme Court nominee Brett Kavanaugh are calling for the Senate to vote against his confirmation. 

The former classmates of Kavanaugh's— Charles Ludington, Lynne Brookes and Elizabeth Swisher — wrote in an op-ed for The Washington Post on Thursday that they spoke out publicly because of what they felt like were dishonest statements from Kavanaugh during a Fox News interview and during his testimony before the Senate Judiciary Committee last week.

"We each asserted that Brett lied to the Senate by stating, under oath, that he never drank to the point of forgetting what he was doing," they write.

"We said, unequivocally, that each of us, on numerous occasions, had seen Brett stumbling drunk to the point that it would be impossible for him to state with any degree of certainty that he remembered everything that he did when drunk."

The three write that they "disrupted" their own lives by coming forward about Kavanaugh's alleged drinking. 

"None of this is what we wanted, but we felt it our civic duty to speak the truth and say that Brett lied under oath while seeking to become a Supreme Court justice," they write, adding that they believe telling the truth is a "moral obligation for our nation’s leaders."

"No one should be able to lie their way onto the Supreme Court," they add, before concluding that they believe "that Brett neither tells" the truth or is an embodiment of courage.

"For this reason, we believe that Brett Kavanaugh should not sit on the nation’s highest court," they write. 

The op-ed comes a week after Kavanaugh testified before the Senate Judiciary Committee regarding claims from Christine Blasey Ford that he sexually assaulted her during a high school party in the 1980s. 

Kavanaugh has fiercely denied the accusation.

Kavanaugh said during his testimony that while he “likes beer,” he never has blacked out from drinking.

In addition to Ludington, Brookes and Swisher, Jamie Roche, who shared a dorm with Kavanaugh at Yale, wrote in an op-ed for Slate on Wednesday that Kavanaugh "baldly" lied under oath about his drinking habits. 

The Senate is set to move ahead with a procedural vote on Kavanaugh's nomination on Friday.