Jon Llewellyn Kyl (born April 25, 1942) is an American politician. He served as the United States Senator from Arizona from September 2018 to December 2018 after the death of John McCain. He is a member of the Republican Party. He was in the United States House of Representatives from 1987 to 1995. Before his 2018 appointment, Kyle served in the United States Senate from January 3, 1995, to January 3, 2013. He was the senate Republican party whip from 2007 until 2013.