Washington (CNN) Republican Sen. Jeff Flake of Arizona said on Wednesday that both Brett Kavanaugh and Christine Blasey Ford, the woman who has accused President Donald Trump's Supreme Court nominee of sexual assault, deserve an apology for the way they have been treated and rebuked the President for casting doubt on Ford's credibility.

Flake said that some of the "public comments" about both Kavanaugh and Ford, who will both testify before the Senate Judiciary Committee on Thursday, "have been vile," and said, "we owe you both a sincere apology."

While Republicans can advance Kavanaugh's nomination without any Democratic support, because they only control the chamber 51-49, Kavanaugh's supporters can only lose one GOP and still advance his nomination. Flake is among a handful of Republicans -- which includes Sens. Susan Collins of Maine and Lisa Murkowski of Alaska -- being closely watched but Flake is especially significant given that he's a member of the Judiciary Committee.

Flake argued that both Ford and Kavanaugh have been unfairly caricatured by both sides of the aisle.

"I don't believe that Dr. Ford is part of some vast conspiracy from start to finish to smear Judge Kavanaugh, as has been alleged by some on the right," the senator said.

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