Barry Morris Goldwater (January 1, 1909 – May 29, 1998) was a five-term United States Senator from Arizona (1953–1965, 1969–1987) and the Republican Party's nominee for President in the 1964 election. He was also a Major General in the U.S. Air Force Reserve. He was known as "Mr. Conservative".
Goldwater is the politician most often credited for sparking the resurgence of the American conservative political movement in the 1960s. He also had a substantial impact on the libertarian movement.