Senate Minority Leader Chuck Schumer (D-N.Y.) on Monday, Oct. 26, warned that Republicans would regret confirming Amy Coney Barrett to the Supreme Court.

On Monday night, the Senate voted 52-48 to confirm Barrett to the Supreme Court just a week before Election Day, making President Donald Trump the second president to put three justices on the bench since Ronald Reagan.

Schumer described Monday as “one of the darkest days in the Senate’s 231-year history” and warned that Republicans might have long-term regrets after Barrett’s confirmation.

“The Republican majority is lighting its credibility on fire. … The next time the American people give Democrats a majority in this chamber, you will have forfeited the right to tell us how to run that majority,” Schumer said.

“My colleagues may regret this for a lot longer than they think,” he added.

Schumer claimed that the global climate crisis, and the limiting of rights to choose and vote, are among other consequences of this nomination.

Other Democratic senators warned that they would expand the Supreme Court if they win back the majority in January. Sen. Chris Coons (D-Del.), an ally of Democratic nominee Joe Biden, and Sen. Angus King (I-Maine) said that they are open to expanding the Supreme Court, reported The Hill.

Senate Majority Leader Mitch McConnell (R-Ky.) dismissed Democrats’ warning as “long-standing threats.”

“They’ve been threatening to pack the court [since] before the [Amy Coney] Barrett nomination came along [and] before Justice [Ruth Bader] Ginsburg passed away,” McConnell told “Fox News @ Night” on Monday. “These are long-standing threats.”

“They may have ratcheted up a little bit lately, but this isn’t anything new,” McConnell added.

“They’ve been promising to blow up the Senate by changing the filibuster rule, admitting two new states—[Washington] D.C. and Puerto Rico—to give them four new Democratic senators … They were talking about that earlier in the year. Nothing new, same old threats and intimidation by the hard left.”

McConnell called Barrett a “stunning, outstanding nominee,” adding, “Not only that, she’s got a compelling personal story; seven children, two adopted, one of them with special needs, a great role model for working women across America.”

“This is a happy night for the country, and in particular for this Senate Republican majority,” he said.