John Kyl to Fill John McCain's Seat in the US Senate Former GOP Senator Jon Kyl has been chosen to fill the seat left open by John McCain’s death. Arizona Republican senator Doug Ducey confirmed his selection in a tweet Tuesday morning. Kyl was the second-ranking Senate Republican when he retired from office in 2013. Cindy McCain, Mr. McCain’s widow, has hailed the selection, saying Kyl is
“a dear friend." Arizona has been without a second senator in DC since the ailing McCain returned home in December to spend his last months in the state. As of now, it's unclear how long Kyl will serve in the Senate. Ducey said he hasn't received an assurance from Kyl that he will serve through 2020.