Stevens, 98, changed his mind after watching Kavanaugh testify in front of the Senate Judiciary Committee last week.
Among those who oppose his confirmation is retired Justice John Paul Stevens, who said at a Florida appearance on Thursday that Kavanaugh's testimony suggests political bias, the Palm Beach Post and New York Times report. 'It's an incredibly important thing for the court to guard is this reputation of being impartial, being neutral and not being simply extension of a terribly polarizing process'.
"I know we talk about right, left, liberal and conservative, but to me, we need judges like I think Judge Kavanaugh will be ... ones that will interpret the Constitution and the laws as written, and not be freelancing when it comes to making public policy", the Texas Republican said. During the hearing, some of Kavanaugh's testimony appeared blatantly political - in one instance he called the handling of the accusation "a calculated and orchestrated political hit".
Two Associate Supreme Court Justices are anxious for the future of the highest court in the federal judiciary after Justice Anthony Kennedy leaves. Stevens was unanimously confirmed by the U.S. Senate in 1978.
Stevens said political leaders and the court have failed to fix the nation's confidence in the judicial branch's separation from the president and the Legislature.More news: Prithvi Shaw youngest Indian to crack hundred on debut
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Stevens, who's praised Kavanaugh before, says he's changed his mind about Kavanaugh for reasons unrelated to Kavanaugh's "intellectual ability".
Stevens, who was appointed to the bench by Republican President Gerald Ford in 1975, retired from the Supreme Court in 2010.
Stevens doesn't even bring up the possibility that Kavanaugh stands accused of sexual misconduct by multiple women; the fact that Kavanaugh was unable to hide his obstinately biased opinions is enough to disqualify him.
Stevens opined, "I thought he had the qualifications for the Supreme Court, should he be selected".
Kavanaugh had spent more than three years working for Ken Starr, the independent counsel who investigated Democratic President Bill Clinton in the 1990s.