Across multiple studies using diverse samples, we analyze attitudes toward increasing representation of minoritized groups in political spaces. When individuals understand how structural biases impact their own group, they are more likely to recognize the broader influence of these biases on other groups and support systemic change (e.g., Craig et al., 2020). Building on previous research, we examine the role of racial resentment and perceptions of structural bias in maintaining inequality and test how these perceptions predict support for increased political representation by individuals from underrepresented groups (e.g., women, LGBTQ+ groups, immigrants). Results show that feelings of racial resentment predict more negative attitudes toward increased diversity in representation, while beliefs about structural bias predict more positive attitudes, even after accounting for established ideological and identity factors. Our findings suggest efforts to foster support for diversity might be better served by increasing awareness of structural inequalities than appealing to shared identity.