Yes, according to The New York Times‘ Adam Liptak.
Since Chief Justice John G. Roberts, Jr. took the center seat on the Court’s bench in 2005, the justices have strongly tended to pick clerks who previously worked for federal judges appointed by the same party the justices were. For example, every clerk selected by Justices Antonin Scalia and Clarence Thomas since 2005 previously clerked for Republican-appointed federal judges (in Thomas’ case, in his 19 years on the bench, he has never selected a clerk who worked for a judges appointed by a Democrat.)
Only two of the 24 clerks that have worked for Justice Samuel Alito worked for Democratic appointees.
On the other side of the political spectrum, only four of Justice Ruth Bader Ginsburg’s last 24 clerks came from GOP-chosen judges.
Compare the late Chief Justice William Rehnquist, whose clerks were split fairly evenly from judges appointed by each party.
So what does this mean?
“We are getting a composition of the clerk work force that is getting to be like the House of Representatives. Each side is putting forward only ideological purists,” said David J. Garrow, a University of Cambridge historian, who told Liptak that the Court’s clerk-hiring patterns show similarities to the political branches of government.