Deborah Mandel Senn (March 8, 1949 – February 18, 2022) was an American lawyer and politician of the Democratic Party.
In 2000, in lieu of running for re-election, she ran for the U.S. Senate, losing in the Democratic primary election to Maria Cantwell.
[2] She is a first cousin, once-removed of current Washington State Representative Tana Senn.
[3] Deborah Senn was raised in Chicago's South Shore neighborhood.
[4] Senn served as chief counsel in Illinois Governor James R. Thompson's Office of Consumer Services.