A pair of Supreme Court nominee Brett Kavanaugh's former classmates at Yale Law on Tuesday withdrew their support of him after previously endorsements.

Michael Proctor and Mark Osler wrote in a letter to Senate Judiciary Committee Chairman Chuck Grassley Charles (Chuck) Ernest GrassleyCollins says she will vote 'no' on Supreme Court nominee before election The Hill's Morning Report - Sponsored by Facebook - Trump, GOP allies prepare for SCOTUS nomination this week Gardner signals support for taking up Supreme Court nominee this year MORE (R-Iowa) and ranking member Dianne Feinstein Dianne Emiel FeinsteinBiden leads Trump by 12 points among Catholic voters: poll Names to watch as Trump picks Ginsburg replacement on Supreme Court McConnell says Trump nominee to replace Ginsburg will get Senate vote MORE (D-Calif.) that they can no longer support Kavanaugh's confirmation because of the "nature" of his testimonty in front of the committee last week while addressing accusations of sexual misconduct.

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“In our view that testimony was partisan, and not judicious, and inconsistent with what we expect from a Justice of the Supreme Court, particularly dealing with a co-equal branch of government," they wrote.

They added that their decision to withdraw their support was not based on the allegations made by Christine Blasey Ford, who has said that Kavanaugh sexually assaulted her in high school.

Two former Yale classmates of Kavanaugh's who previously vouched for him just wrote to the Senate Judiciary Committee to note they are withdrawing their support because of "the nature of Judge Kavanaugh’s testimony." pic.twitter.com/b0DEQIbYQF — Jennifer Bendery (@jbendery) October 2, 2018

Proctor and Osler were previously among 27 of Kavanaugh's classmates who in August wrote a letter to Grassley and Feinstein advocating for Kavanaugh. In that letter, they and the other signatories wrote they "firmly believe that Judge Kavanaugh would make decisions thoughtfully, honestly and impartially."

But Proctor and Osler wrote in their new letter that they “fear that partisanship has injected itself into Judge Kavanaugh’s candidacy.”

Kavanaugh during his testimony Thursday accused Democrats of undermining him with "a calculated and orchestrated political hit" that was part of a revenge plot "on behalf of the Clintons."

The high court nominee has seen his confirmation process upended by allegations of sexual misconduct made by three women: Ford, Deborah Ramirez and Julie Swetnick. The FBI is currently conducting a new background investigation of Kavanaugh focusing on those accusations.