Lyndon Baines Johnson, often referred to by his initials LBJ, was an American politician who served as the 36th president of the United States from 1963 to 1969, and previously as 37th vice president from 1961 to 1963. He assumed the presidency following the assassination of President John F. Kennedy. A Democrat from Texas, Johnson was also a United States representative and later majority leader in the United States Senate. Johnson is one of only four people to have served, at various times, in all four federal elected positions.
Born in a farmhouse in Stonewall, Texas, Johnson worked as a high school teacher and a congressional aide before winning election to the U.S. House of Representatives in 1937. Johnson won election to the United States Senate from Texas in 1948 after narrowly winning the Democratic Party's nomination. He was appointed to the position of Senate Majority Whip in 1951. He became the Senate leader of the Democrats in 1953. He became known for his domineering personality and the "Johnson treatment", his aggressive coercion of powerful politicians to advance legislation.
Johnson ran for the Democratic nomination in the 1960 presidential election.