This article investigates the dynamics of discrimination in political science PhD programs with a survey of current political science graduate students in the top 50 departments. The study focuses on mentorship, funding, sexual harassment, racism, homophobia, and labor exploitation: 20% of respondents reported labor exploitation, 19% experienced racial discrimination, 9% reported sexual harassment, and 6% experienced homophobia. Discrimination is uneven across individuals; some groups of graduate students experience widespread discrimination, especially racial discrimination, whereas other groups are largely unaware of these issues. We conducted a survey experiment to gauge the impact of misconduct on formal reporting mechanisms and find that hearing about racial discrimination has a chilling effect on reporting. We find that experiencing discrimination harms how satisfied students are in their program. We find that factors linked to student vulnerability, such as international status and funding, are significantly associated with harassment and that reporting discrimination predicts more discrimination.