Michael Joseph Mansfield (March 16, 1903 – October 5, 2001) was an American Democratic Party politician and diplomat who represented Montana in the United States House of Representatives from 1943 to 1953 and United States Senate from 1953 to 1977.

On March 24, 1998, Mike Mansfield returned to the Senate to deliver the first Leader's Lecture in the Old Senate Chamber, which had been restored during his long tenure as Senate majority leader. Many of the senators who attended had not served with Mansfield. He was 95 years old, but stood straight and spoke forthrightly.

Mar 12, 2025 · Michael Mansfield (born March 16, 1903, New York, New York, U.S.—died October 5, 2001, Washington, D.C.) was a Democratic politician who was the longest-serving majority leader in the U.S. Senate (1961–77). He also …

Mike Mansfield’s political career was launched in 1942 when he was elected to the U.S. House of Representatives. He served five terms from Montana’s 1st District. In 1952, he was elected to …

Serving as Democratic whip when Senate Majority Leader Lyndon B. Johnson resigned in 1961 to become vice president, Mike Mansfield was a logical choice to succeed Johnson.

Montana senator Mike Mansfield, the new majority leader in 1961, contrasted sharply with his powerful and outgoing predecessor, Lyndon Baines Johnson. A soft-spoken man, Mansfield’s style of leadership seemed the antithesis of Johnson’s forceful arm-twisting.

Mar 15, 2022 · March 16 marks the birthday of Mike Mansfield, the longest serving Majority Leader in US Senate history, working under 7 Presidents & holding the highest office a Montanan has ever held.

Oct 6, 2001 · An obituary last Saturday about Mike Mansfield, the longest-serving Senate majority leader, misstated the timing of the lie about his age that allowed him to join the Navy before he was 15.

Oct 5, 2001 · Mike Mansfield, who served as Senate majority leader and United States Ambassador to Japan longer than anyone else, died this morning at Walter Reed Army Medical Center in Washington.

This digital collection consists of speeches by, statements of and interviews with Mike Mansfield (1903-2001) drawn from the extensive Mike Mansfield Papers held at the University of Montana’s Mansfield Library.