McConnell states that he has not yet decided on his vote for Jackson's confirmation to the Supreme Court.

• Mitch McConnell, the Senate Minority Leader, stated on Sunday that he has not yet decided how he will vote on Judge Ketanji Brown Jackson's Senate hearing for the Supreme Court.
• The first Black woman to be nominated to the top court will appear before the Senate Judiciary Committee on Monday.

Mitch McConnell, the Senate Minority Leader, stated on Sunday that he has not yet decided how he will vote during Judge Ketanji Brown Jackson's Senate hearing for her nomination to the Supreme Court.

The first Black woman to be nominated to the top court will appear before the Senate Judiciary Committee on Monday.

McConnell stated on "Face the Nation" that the Committee will respectfully examine her record in a thorough investigation before making a final decision on how he will vote.

Some Republicans have intensified their criticism of Judge Jackson during the confirmation hearing.

Last week, it was reported that McConnell expressed concern that Jackson's background as a public defender might cause her to advocate for the rights of criminal defendants.

Hawley, a Republican senator from Missouri, stated last week that he had reviewed Jackson's record and found a concerning pattern in the judge's treatment of child sex offenders. However, subsequent fact-checks by independent sources proved Hawley's claims to be false.

On "This Week" on Sunday, Sen. Dick Durbin criticized Sen. Josh Hawley's attacks on Jackson, stating that his analysis of the Supreme Court nominee was "inaccurate and unfair."

Durbin stated that "He is part of a fringe within the Republican Party and lacks the credibility he believes he possesses."

If confirmed, Jackson, 51, would replace one liberal justice with another, maintaining the 6-3 conservative majority of the top U.S. court.

She has been a judge on the U.S. Court of Appeals for the D.C. Circuit since last year, having won Senate confirmation with the support of every Democrat and three Republicans.

In order to be appointed to the Supreme Court, Jackson must receive the support of at least 50 senators in the evenly divided Senate. She can secure confirmation without the backing of any Republicans if all Democrats vote in her favor.

No Democrats have yet stated their intention to oppose President Biden's nominee for the Supreme Court, Jackson, despite many Republicans viewing him as too liberal.

—CNBC’s Jacob Pramuk contributed to this article.