Mary E. Panzer (September 19, 1951) is an American banker and politician. A Republican, she served 25 years in the Wisconsin Legislature, including 11 years in the Wisconsin State Senate (1993–2005) and 14 years in the State Assembly (1980–1993). Her father, Frank E. Panzer, was also a member of the Wisconsin State Senate.

Born in Waupun, Wisconsin, Panzer was educated at the University of Wisconsin–Madison, after which she was a banker and worked in the Wisconsin State Legislature.

In 1980, Panzer was elected to the Wisconsin State Assembly in a special election to replace fellow Republican James R. Lewis (who had been convicted of perjury). (She had almost defeated then-incumbent Lewis in the 1974 Republican primary.) She served until 1993, when she was elected to the Wisconsin State Senate in another special election.^[1] Panzer eventually rose to be the majority leader of the senate.

In the Republican primary election in September 2004, Panzer was herself defeated for renomination by her successor in the state assembly, Glenn Grothman, who alleged that she was not sufficiently conservative for the modern-day Republican Party.^[2] Grothman won with a vote of 79% to 21% for Panzer.^[3]

• Profile at Vote Smart
• 20th Senate District, Senator Panzer in the Wisconsin Blue Book (2003–2004)

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