Graphic shows process for confirming Supreme Court justices.;

FILE - In this May 19, 2018, file photo, Amy Coney Barrett, United States Court of Appeals for the Seventh Circuit judge, speaks during the University of Notre Dame's Law School commencement ceremony at the university, in South Bend, Ind. Barrett, a front-runner to fill the Supreme Court seat vacated by the death of Justice Ruth Bader Ginsburg, has established herself as a reliable conservative on hot-button legal issues from abortion to gun control. (Robert Franklin/South Bend Tribune via AP, File)

Graphic shows number of days for confirmation process for sitting justices;

Sen. Mitt Romney, R-Utah, leaves the Senate Chamber following a vote, at the Capitol in Washington, Monday, Sept. 21, 2020. Romney is one of four Republicans who could oppose a vote on a replacement for the late Justice Ruth Bader Ginsburg prior to Election Day. (AP Photo/J. Scott Applewhite)

Senate Majority Leader Mitch McConnell, R-Ky., arrives to meet with reporters following a Republican strategy session, at the Capitol in Washington, Tuesday, Sept. 22, 2020. Republican efforts to fill the Supreme Court vacancy created by the death of Justice Ruth Bader Ginsburg are likely to move swiftly this week, with President Donald Trump possibly nominating a replacement within days and GOP senators hoping to jump-start the confirmation process. (AP Photo/J. Scott Applewhite)

Senate Minority Leader Chuck Schumer, D-N.Y., holds a press briefing on the Supreme Court vacancy created by the death of Justice Ruth Bader Ginsburg, outside the Capitol in Washington, Tuesday, Sept. 22, 2020. (AP Photo/J. Scott Applewhite)

FILE - In this June 30, 2020, file photo, Sen. Susan Collins, R-Maine, speaks during a Senate Health, Education, Labor and Pensions Committee hearing on Capitol Hill in Washington. Collins is once again in a pressure cooker over an issue riveting the nation. This time it's the battle over President Donald Trump’s effort to replace the late Justice Ruth Bader Ginsburg on the Supreme Court. (Al Drago/Pool via AP, File)

Senate Minority Leader Chuck Schumer, D-N.Y., joined by Sen. Patty Murray, D-Wash., left, holds a press briefing on the Supreme Court vacancy created by the death of Justice Ruth Bader Ginsburg, outside the Capitol in Washington, Tuesday, Sept. 22, 2020. Republican efforts to fill Ginsburg's seat are likely to move swiftly this week, with President Donald Trump possibly nominating a replacement within days and GOP senators hoping to jump-start the confirmation process. (AP Photo/J. Scott Applewhite)

Democratic presidential candidate and former Vice President Joe Biden speaks at the Constitution Center in Philadelphia, Sunday, Sept. 20, 2020, about the Supreme Court. (AP Photo/Carolyn Kaster)

President Donald Trump speaks to reporters on the South Lawn of the White House, Tuesday, Sept. 22, 2020, before leaving for a short trip to Andrews Air Force Base, Md., and then onto Pittsburgh for a campaign rally. (AP Photo/Andrew Harnik)

A memorial to U.S. Supreme Court Justice Ruth Bader Ginsburg includes a photograph of the late Justice, Tuesday, Sept. 22, 2020, outside the Harvard Law School library at Langdell Hall, on the campus of Harvard University, in Cambridge, Mass. Ginsburg, who attended Harvard law school but transferred to Columbia, died Friday, Sept. 18, 2020, at the age of 87. (AP Photo/Steven Senne)