(born February 20, 1942) is the senior United States Senator from Kentucky. A member of the Republican Party, he has been the Minority Leader of the Senate since January 3, 2007.First elected to that position in 2006, he is the 15th Senate Republican Leader and the second Kentuckian to lead his party in the Senate. The first, Alben Barkley, led the Democrats from 1937 to 1949. He is also the longest serving U.S. Senator in Kentucky history. Currently he is the 9th most-senior Senator, as well as the 4th most senior Republican member.