The stage is set for U.S. Supreme Court nominee Neil Gorsuch’s confirmation hearing to begin on Monday before the Senate Judiciary Committee.

Supporters, including a significant number of his former law clerks, have been prepping him for the hearing, which may last three or four days. Stand-ins for senators have peppered Gorsuch with questions in so-called murder boards, or mock hearings, at the Eisenhower Executive Office Building near the White House.