Has he picked someone more conservative at the time the Democrat Senators would not have approved it. There was no need for a filibuster since the Dems controlled the Senate back then. All three of the Republican appointed judges that voted for this were approved by a Democrat Senate.
"Bork was a circuit judge for the United States Court of Appeals for the District of Columbia Circuit from 1982 to 1988, and was nominated by President Ronald Reagan to the Supreme Court in 1987. He was strongly opposed by political groups favoring a continuation of the liberal jurisprudence of the Warren court.