This guide aims to help TI chapters and other civil society groups to undertake effective advocacy to combat judicial corruption. In addition to providing basic advice about conducting advocacy, it provides examples from TI chapters of work on judicial corruption, including monitoring the process of selecting Supreme Court judges (Ecuador), monitoring actual cases(Ghana) and diagnosing corruption problems (Nicaragua). Last but not least it includes a Diagnostic Checklist for Assessing Safeguard against Judicial Corruption. This checklist (pp 23-32) can be used as a diagnostic tool to assess the extent of judicial corruption in a country. It covers two areas: (1) the system requirements for a clean judiciary; and (2) the responsibilities of actors involved in the judicial system.