Diane Joyce Drufenbrock (7 October 1929 – 4 November 2013), also known as Sister Madeleine Sophie, was an American religious sister as a member of the Catholic School Sisters of St. Francis. She was a Christian socialist who was the vice-presidential candidate for the Socialist Party USA in the 1980 United States presidential election.
Biography
Drufenbrock was born in Evansville, Indiana as the daughter of a plumber. and of Marquette University, she taught mathematics at Alverno College, at the University of Wisconsin–Parkside, and elsewhere around Milwaukee, including at the then-new St. Joseph High School (Kenosha) when it opened in September 1957. Drufenbrock gained a doctorate in mathematics from the University of Illinois at Urbana in 1963. After teaching for 13 years at Alverno College, she taught at Saint Mary-of-the-Woods College in her native Indiana for 18 years.
Dufenbrock started to work in community affairs whilst teaching at the school. She worked for the Milwaukee Tenant's Union and was a director of the Wisconsin branch of Project Equality to campaign for equal opportunities for women, disabled and ethnic minorities in work. She ran as their vice-presidential candidate in the 1980 United States presidential election, and served as that party's National Treasurer from 1977. That campaign resulted in the Party's recognition by the Federal Election Commission as a national political party.