WASHINGTON — A second Republican senator came out in opposition to filling a vacant Supreme Court seat before the Nov. 3 election, while Speaker Nancy Pelosi asserted without details that the Democratic-led House has “options” for stalling or preventing President Donald Trump from quickly installing a successor to the late Justice Ruth Bader Ginsburg.

Sen. Lisa Murkowski of Alaska said in a statement that “for weeks, I have stated that I would not support taking up” a potential nomination as the presidential election neared. “Sadly, what was then a hypothetical is now our reality, but my position has not changed.”

Murkowski joins Maine Sen. Susan Collins, who said replacing Ginsburg should be the decision of the election winner — Trump or Democrat Joe Biden. Republicans hold a 53-47 edge in the Senate. If there were a 50-50 tie, it could be broken by Vice President Mike Pence.

Biden said he will not release a list of potential Supreme Court nominees before the election, Lauren Fox reported Sunday afternoon.

Biden reiterated Sunday afternoon in Philadelphia that the court nomination should not happen before the election.

“To jam this nomination through the Senate is just an exercise in raw political power, and I don’t believe the people of this nation will stand for it,” Biden said, according to Fox.

Senate Majority Leader Mitch McConnell, R-Kentucky, has pledged to move forward but hasn’t set a timetable.

Focus is growing on Sen. Mitt Romney, R-Utah, who has broken with Trump before. There is another potential wrinkle: Because the Arizona Senate race is a special election, that seat could be filled as early as Nov. 30, which would narrow the window for McConnell if Democrat Mark Kelly wins.

The House has no formal say in presidential nominations, a role the Constitution assigns to the Senate, and Pelosi, D-California, refused in a television interview to detail the “arrows in our quiver,” even when asked about trying to impeach Trump for a second time.

Ginsburg’s death Friday at age 87 has injected new ferocity into the election-year battle for the presidency and control of Congress, in a nation already struggling with the coronavirus pandemic, economic collapse and racial tension. The talk on the Sunday news shows gave a glimpse of the power tug over the timing of any vote to fill Ginsberg’s seat 44 days from the election.

Trump says he is obligated to act as soon as possible and had at least two women in mind for the seat. Most Republicans concurred on the need for speed and one named a practical reason: The nine-seat member, argued Sen. Ted Cruz of Texas, must be full if called upon to decide the outcome of a disputed presidential election.

Democrats urged the GOP Senate majority to heed its own advice against filling the court’s lifetime slots so close to elections.

“The people pick the president. The president picks the justice,” said Sen. Amy Klobuchar, D-Minnesota.

Pelosi was asked whether she would be open to the House undertaking impeachment proceedings against Trump or Attorney General William Barr, as a way of trying to stall the confirmation process. She did not rule out doing so.

“We have our options. We have arrows in our quiver that I’m not about to discuss right now,” she said. Pelosi had stopped by the Supreme Court in the quiet of Sunday morning to pay tribute to Ginsburg at the site that has filled since Friday with people, many leaving bouquets of flowers.

The next justice, Pelosi said, would help determine the survival of the Affordable Care Act. The court is scheduled to hear a lawsuit involving “Obamacare” on Nov. 10, which could affect the law’s protection of people with preexisting conditions.

“Those are the people the president wants to crush when he says he wants to replace the justice in this short period of time,” Pelosi said.

Nonetheless, the process was moving ahead. On a call with McConnell late Saturday, Trump mentioned two federal appeals court judges: Amy Coney Barrett and Barbara Lagoa, according to a person familiar with the private conversation who was not authorized to publicly discuss the call and spoke on condition of anonymity.

Rich Barak of The Atlanta Journal-Constitution contributed to this report.