The authors present a study testing and refining the social psychological model of schism in groups (F. Sani, 2005) by applying it to the schism that occurred in Alleanza Nazionale-an Italian political party of the right-in 2003. The authors found that perceptions of identity subversion (a sense that the group essence has been undermined by a change made by the group majority) have negative effects on group identification and positive effects on aversive emotions (dejection, agitation, and anger). Perceived identity subversion also has a negative influence on perceived group entitativity, which in turn has positive effects on group identification. Finally, group identification has a negative impact, and aversive emotions have a positive impact, on schismatic intentions. The authors also found that the more those who oppose the change are seen as having the ability to voice their dissent, the less both the negative impact of group identification and the positive impact of aversive emotions on schismatic intentions.