Thomas Geoghegan is a practicing attorney and the author of several books, including the National Book Critics Circle Award finalist Which Side Are You On?, In America's Court, and See You in Court (all available from The New Press). He contributes regularly to The Nation, the New York Times, and Harper's. In 2009, he ran as a progressive candidate for Rahmn Emanuel's congressional seat and was endorsed by Barbara Ehrenreich, James Fallows, Thomas Frank, James K. Galbraith, Hendrik Hertzberg, Alex Kotlowitz, Sara Paretsky, Rick Perlstein, Katha Pollitt, David Sirota, Garry Wills, and Naomi Wolf, among others.

Born in Cincinnati in 1949, Geoghegan is a graduate of St. Xavier High School, Harvard University, and Harvard Law School. He has worked as a contributing editor at The New Republic, a lawyer in the United Mine Workers's legal department, and a policy analyst for the U.S. Department of Energy. He is a partner at the law firm Despres, Schwartz, and Geoghegan, where he has worked since 1979. As a public-interest lawyer, he has filed lawsuits to enforce child labor laws, expand voting rights, crack down on the payday loan industry, and require public health measures to stop the spread of tuberculosis among the homeless. As a labor lawyer, he has represented nurses, machinists, railroad workers, steelworkers, teachers, truck drivers, the rank-and-file anticorruption group Teamsters for a Democratic Union, as well as workers who lack the protection of a union.

Geoghegan has been awarded a Fulbright scholarship, a German Marshall grant, and fellowships at the American Academy in Berlin and the Institute of Politics at Harvard's Kennedy School of Government.