WASHINGTON — President Donald Trump said Sunday that confirmation of his Supreme Court nominee Amy Coney Barrett will go “quickly” but his Democratic rival, Joe Biden, implored the Republican-led Senate to hold off on voting on her nomination until after the Nov. 3 election to “let the people decide.”

Speaking at a press conference at the White House, the president spotlighted Barrett’s Roman Catholic religion, portraying her as a victim of attacks on her faith. But it’s her conservative approach to the law, particularly health care access that is drawing opposition from Democrats, not her private beliefs.

“It’s a disgrace,” Trump said. He vowed she will be confirmed “very quickly.”

Trump’s announcement of Barrett for the seat held by the late Justice Ruth Bader Ginsburg is launching a high-stakes, fast-track election season fight over confirmation of a conservative judge who is expected to shift the court rightward as it reviews health care, abortion access and other hot-button issues.

Biden on Sunday appealed directly to his former colleagues in the Senate to “take a step back from the brink.”

Biden urged Senate Republicans not to fan a controversy during an already tumultuous election year for a country reeling from the coronavirus crisis, a struggling economy and protests over racial injustice. If Trump wins the election, his nominee should have a vote, Biden said, but if he wins the presidency, he should choose the next justice.

“This is time to de-escalate,” Biden said in Wilmington, Delaware.

No justice has ever been confirmed to the Supreme Court so close to a presidential election with early voting already underway in some states. Republicans believe the fight ahead will boost voter enthusiasm for Trump and Senate Republicans at serious risk of losing their majority. Democrats warn Barrett’s confirmation would almost certainly undo Americans’ health care protections as the high court takes up a case against the Affordable Care Act in the fall.

According to a national poll by The New York Times and Siena College that was released Sunday, a clear majority — 56% — of voters believes the winner of the Nov. 3 presidential election should fill Ginsburg’s seat, versus 41% who said Trump should as the current president. Biden has said he would nominate the first Black woman to the court, but he has not released the names of his potential choices.

The poll, which was conducted Sept. 22-24, had a margin of sampling error of 3.5 percentage points.

House Speaker Nancy Pelosi declined to say Sunday whether Barrett, a judge on the 7th U.S. Circuit Court of Appeals, is qualified to serve. But she argued that Trump was moving quickly to fill the vacancy before the court hears a challenge to the Affordable Care Act on Nov. 10.