He was first elected to the Assembly in 1984 and was subsequently re-elected twelve times. In 1998, Black endorsed Kenosha representative James Kreuser in his unsuccessful bid for Democratic Minority Leader. A few years later, following Democrats' disappointment with the results of the 2000 election, Black challenged Marlin Schneider for the role of Assistant Minority Leader and won a surprising upset victory.[3] He worked with Kreuser over the next few months to bring a challenge to Minority Leader Shirley Krug, culminating in their May 2001 victory in which Black was elected Minority Leader and Kreuser Assistant Minority Leader.[4] Their victory was seen as a repudiation of the Democratic Leadership Council in Wisconsin, which some in the caucus blamed for a strategy which saw Democrats stuck in the minority.[5] Black relinquished his leadership role after less than one session, endorsing Kreuser as his successor.[6]
He served for many years as the Chair of the Assembly Natural Resources Committee. He authored numerous environmental laws including the Knowles-Nelson Stewardship Fund, the Mining Moratorium law, the Lower Wisconsin Riverway, the statewide recycling program, and the endangered species matching grant program.
Later years
He is currently a Professor of Urban and Regional Planning at the University of Wisconsin-Madison and was Vice President of the 2014 board of directors for the Sierra Club, one of the nation's oldest and most prestigious environmental activists agencies. He continues to reside in Madison and often writes as an opinion columnist for The Capital Times.[7]