Clarke's replacement will serve through the end of next year. The position is up for election in November 2018. Inspector Richard Schmidt is serving as interim sheriff.
Former Milwaukee police captain Earnell Lucas is running and says he will ask Walker to appoint him. Milwaukee County Circuit Judge John Siefert also says he plans to run in 2018 but will not seek Walker's appointment. Both are Democrats.
U.S. Marshal Kevin Carr has said he would seek Walker's appointment. He served as Clarke's deputy for years.