Sen. Michael “Mike” Mansfield

Former Senator from Montana


Elected Positions

Dates Title State / District
1959-1976 Senator Montana
1953-1958 Senator Montana
1947-1952 Representative Montana's 1st District
1943-1946 Representative Montana's 1st District

See Also: Bioguide


Sponsorship Analysis

Our unique analysis of the bills Mansfield sponsored and cosponsored provides insight into his position in the Senate.

Each dot in the chart below is a member of the Senate. The dots are positioned horizontally according to our progressive—conservative ideology score and vertically according to our leadership score (leaders toward the top). Mansfield is shown as a purple triangle. (analysis methodology)

Bills Sponsored

Some of Mansfield’s most recently sponsored bills include...

View All » (including bills from previous years)

Voting Record

From Jan 1953 to Oct 1976, Mansfield missed 650 of 7,326 roll call votes, which is 8.9%. This is better than the median of 11.7% among the lifetime records of senators serving in Oct 1976. The chart below reports missed votes over time.

Show the numbers...

Primary Sources

The information on this page is originally sourced from a variety of materials, including: