Phoenix Mayor Greg Stanton resigned this week to run for a seat in the U.S. Congress. Arizona has a resign to run law, forcing Stanton to leave his position to campaign for a different office.

Thelda Williams, a council member representing Phoenix’s District One, will serve as the interim mayor until June 11 when the Phoenix City Council will appoint a mayor pro tempore who will serve until a special election is held. The special election will likely take place on November 6, 2018 along with the state’s regularly scheduled elections.