Two experiments test the hypothesis that support for leaders is enhanced when their decisions affirm a distinct social identity that is shared with followers. In Experiment 1, participants showed less support for a leader who favored ingroup members who were relatively sympathetic to an outgroup position than for one who favored ingroup members who opposed an outgroup position. This finding was replicated in Experiment 2, which also showed that this pattern extended to support for the leader’s novel plans. Although participants indicated that they supported a leader who behaved evenhandedly toward all ingroup members as much as one whose behavior was identity-affirming, they were unwilling to back up the evenhanded leader with written comments and arguments. These data suggest that leaders’ capacity to engender active followership is contingent on their ability to promote collective interests associated with a shared ingroup identity.