Sen. Susan Collins, R-Maine, revealed Sunday there was a moment during the confirmation process for Justice Brett Kavanaugh in which she thought he would have to withdraw from the confirmation process to elevate him to the Supreme Court.

"I was certainly undecided and after hearing Christine [Blasey] Ford's very compelling and painful testimony I thought, 'Oh, my goodness, he perhaps needs to withdraw,'" Collins said during an interview with CNN's "State of the Union."

"But then when he came back with such a forceful denial, and the anger and anguish that he showed, and then the lack of corroboration led me back to the fundamental issues that are fundamental to our legal system of presumption of innocence and fairness," she said.

[Click here for complete Kavanaugh coverage]

Collins' support was a crucial swing vote needed to secure Kavanaugh's 50-48 approval by the Senate. His nomination was put to the test after three women, including Ford, accused him of sexual misconduct dating back to the 1980s when he was a teenager.

The justice denied the accusations, but also faced some backlash due to his passionate testimony last week during which he said, among other things, he was a target of a "revenge" plot by Democrats "on behalf of the Clintons."

Kavanaugh was sworn in Saturday evening as the 114th Supreme Court justice.