In the days leading up to the March 18 primary election, the Daily Law Bulletin will publish responses to questionnaires sent to candidates in all contested Cook County judicial races. Campaign finance information comes from Illinois State Board of Elections reports.Name: John J. MahoneyAge: 55Residence: Oak LawnParty: DemocratCurrent position: Cook County assistant state’s attorney, serving as supervisor of the public corruption and financial crimes unit of the office’s special prosecutions bureau.Past …