5-3
If Trump is impeached, it will require Roberts to go to the Senate, taking him temporarily out of the SC…
Roberts also faces more mundane logistical challenges. If lawmakers follow the procedures from the last impeachment trial, it would run six days a week—during a time that the Supreme Court’s work may be continuing apace. The Supreme Court has plenty of its own work to do. This term, it agreed to hear its first major abortion case since Kavanaugh took the bench, and it will hear arguments about Trump’s termination of the Deferred Action for Childhood Arrivals (DACA) policy, among other high-profile cases. In Roberts’ absence, Justice Clarence Thomas, the most senior associate justice, would fill in for him in the top role at the Supreme Court.
https://time.com/5713951/john-roberts-impeachment-oversee/