Are party members in single-party regimes more community-minded than non-party members? Understanding who joins authoritarian parties has important implications for authoritarian party durability and legitimacy. Parties able to recruit the community-minded may be viewed with greater trust. We argue that mass-based authoritarian parties successfully attract more community-minded citizens. We test our theory using a behavioral recruitment experiment for women in two rural districts in Vietnam and find that party members are ten percentage points more likely to join a training program when primed by collective incentives than non-party members. By contrast, party members are less likely to join when incentivized with selective incentives. A follow-up charity experiment shows that those in the community-incentive treatment group donate more to charity, further suggesting community-mindedness at work. The theory and findings could explain citizen trust in Vietnam’s single-party regime and speak to a broader alternative pathway to single-party regime legitimacy.