Gov. Doug Ducey has named Sen. Jon Kyl to fill the late Sen. John McCain’s seat in the Senate.

Sen. Kyl represented Arizona in the Senate for close to 20 years before reaching retirement in 2013. Kyl has committed to serving until the end of 2018, and possibly until a 2020 special election to fill the seat more permanently.

Gov. Ducey’s office reportedly considered several replacements since Sen. McCain’s diagnosis 13 months ago, including his wife Cindy McCain.

Gov. Ducey is the first governor in Arizona’s 106-year history to fill a U.S. Senate seat by appointment.