Studies on governance transfer by regional organizations (ROs) are on the rise. The extant literature has mainly focused on democracy and human rights (for an overview see Pevehouse forthcoming; McMahon and Baker 2006). Meanwhile, the promotion of other governance standards, such as the rule of law and the fight against corruption, have received far less attention (but see Jakobi 2013a; Zürn et al. 2012) and a systematic comparison of the general patterns of governance transfer by ROs across time, space, and issue areas is still missing.