President Donald Trump said he will announce his nominee to the Supreme Court on Tuesday as he looks to quickly put his stamp on the court by restoring its conservative majority, even as Democrats geared up for a Senate confirmation fight.

Trump, set to fill the lingering vacancy on the nation’s highest court left by the death of conservative Justice Antonin Scalia in February 2016, said on Monday he will reveal his choice at the White House at 8 p.m. on Tuesday, two days earlier than previously planned.

Three conservative appeals court judges appointed to the bench by former President George W. Bush were among those under close consideration. They are: Neil Gorsuch, a judge on the Denver-based 10th U.S. Circuit Court of Appeals; Thomas Hardiman, who serves on the Philadelphia-based 3rd U.S. Circuit Court of Appeals; and William Pryor, a judge on the Atlanta-based 11th U.S. Circuit Court of Appeals.

Since Scalia’s death, the Supreme Court has been ideologically split with four conservatives and four liberals. Another conservative justice could be pivotal in cases involving abortion, gun, religious and transgender rights, the death penalty and other contentious matters.

Trump’s appointee to the lifetime post could face stiff opposition from Democrats in the Republican-led Senate, which must confirm nominees to the high court. Some liberal groups have urged Democrats to do everything possible to block Trump’s nominee.