Lyndon Baines Johnson (; August 27, 1908January 22, 1973), often referred to as LBJ, was the 36th President of the United States from 1963 to 1969, assuming the office after serving as the 37th Vice President of the United States from 1961 to 1963. Johnson was a Democrat from Texas, who served as a United States Representative from 1937 to 1949 and as a United States Senator from 1949 to 1961. He spent six years as Senate Majority Leader, two as Senate Minority Leader, and two as Senate Majority Whip.