Clinton has the support of many public sector unions, including the American Federation of State, County and Municipal Employees Union, the American Federation of Teachers and the United Farm Workers.
Wisconsin membership in the American Federation of State, County and Municipal Employees--the state's second-largest public-sector union after the National Education Association, which represents teachers--fell to 28, 745 in February from 62, 818 in March 2011, according to a person who has viewed Afscme's figures.