Madeleine Dean Cunnane (born June 6, 1959) is an American lawyer and politician serving as the U.S. representative[1] for Pennsylvania's 4th congressional district.

She then opened a small, three-woman law practice in Glenside, and served as in-house counsel for her husband's growing bicycle business.

She served 10 years as an assistant professor of English at her alma mater, La Salle University, in Philadelphia, where she taught writing and ethics.

[6][7] Dean got her start in politics soon after graduating from high school, when she was elected to an Abington Township committee seat.

Having worked and volunteered in politics for decades, and her children grown, Dean was asked to become a public servant herself, serving as Abington Township commissioner, and ran for state representative in 2012.

[9] In the State House, she prioritized social issues such as addiction, equal rights, access to healthcare, ethics, criminal justice reform, and gun violence.

[12] She served on several committees, including Appropriations, Judiciary, Policy, Urban Affairs, State Government, and Finance, of which she was vice-chair.

[22] On July 29, 2024, Dean was announced as one of six Democratic members of a bipartisan task force investigating the attempted assassination of Donald Trump.

[29] In November 2017, Dean announced her candidacy for lieutenant governor of Pennsylvania, facing, among others, incumbent Mike Stack in the Democratic primary.