Justices of the Arizona Supreme Court are appointed by the Governor of Arizona. The governor selects justices from a list compiled by the Arizona Commission on Appellate Court Appointments, which is a bipartisan commission.
You can read more about the selection process here: Ballotpedia.
When was the Board of Accident Inquiry appointed and for how long did it meet?
How many counties in New York State have exemptions for appointed sheriffs?
What role did Otto Glöckel play in changing the appointment process for professors?
What led to Myer's appointment as chief signal officer in 1863?