Washington Post’s deputy editorial page editor Ruth Marcus is writing a book on the confirmation of Supreme Court Justice Brett Kavanaugh, whom she believed shouldn’t have made it to the bench.

Marcus, who announced the book deal with Simon & Schuster on Saturday, has been a skeptic of Kavanaugh throughout his confirmation, even before decades-old allegations of sexual assault.

One of Marcus’ columns said that senators should vote against Kavanaugh because he refused to commit to recusing himself on cases involving any investigation into President Trump.

“The reason Kavanaugh asserted at his confirmation hearing for refusing to make such a pledge — that it would violate the imperative of judicial independence — is entirely unconvincing,” Marcus wrote in a column on the Washington Post on Sept. 7.

Marcus said that senators should vote "no" on Kavanaugh unless he changes his mind and pledges to recuse himself.

Marcus also called for a full investigation into allegations of sexual assault from psychology professor Christine Blasey Ford.

She also defended senators’ questions into Kavanaugh’s high school life, including remarks that Kavanaugh put in his yearbook. Ford testified in a Senate Judiciary Committee hearing that Kavanaugh sexually assaulted her while both were in high school, an allegation Kavanaugh vehemently denied.

Marcus wrote that Kavanaugh’s honesty is an issue, which is why senators probed at the same hearing about his drinking while in high school.

“Along with the linked concern about the angry eruption in which he sounded less like a judge than an aggrieved partisan, it goes to the core of Kavanaugh’s fitness,” she wrote in a column on Oct. 2. “On this score, it is not helpful to Kavanaugh’s case that he arrived for a second turn at the witness table with preexisting questions about his truthfulness.”

The FBI did a supplemental background check into Ford's allegations but could not find evidence to corroborate them. The Senate eventually narrowly confirmed Kavanaugh by a 50-48 vote.